Have you ever stood in front of those Ruth2 v4 or Roth2 v2 boxed and wondered which one of them you actually need? Well, the labels on these boxes aren't as self-explanatory as they try to be. So before you go home with boxes that you don't even need, I'd like to help you with shopping guides.
The first one is for guys and therefore for Roth2 v2.
So the confusion starts with the bodies themselves. There seem to be two of them, one with a red "BoM" label, one with a blue "0.8.2.1" label. What's up with these?
The "BoM" body is the regular, fully-featured one. The one labeled "0.8.2.1" is the same body with the same BoM and Bento capabilities, but with reduced scripts in order to be compatible with OpenSim back to version 0.8.2.1; the one labeled "BoM" is only guaranteed to work under OpenSim 0.9.1 and newer.
This is also why the "BoM" body comes with a three-page HUD whereas the "0.8.2.1" body doesn't, and it can't be controlled via the regular body's HUD. This means no alpha HUD (which is near-useless and unnecessary in BoM mode anyway), no hand controls and no turning BoM off or changing the alpha mode. On the plus side, it comes with its own pair of Ferd Frederix elf ears.
Otherwise, the box contents are identical. You get the body, BoM-capable mesh eyeballs, one classic/BoM skin, one pair of classic/BoM eyes, one bald hairbase, one shape and a pair of dark grey layer underwear that can be changed in shape. It's basically all you need to start as the body already comes with a head, but you'll probably want more.
Which brings us to the grey boxes with the "R" on them.
The Extras box is the most important one for end users, for it may contain the "more" you want. First of all, it contains the body in various "chunk sizes": the whole body without the head, only the body, head, head with neck extension, hands and feet. Next, we have an alternative shape, namely that from Roth2 v1, previously known as Roth 2.0 RC#1. There are also a whole of eleven skins including a blank one and the one that comes with the bodies, the underwear top as a jacket, Ferd Frederix' elf ears, unisex biker hair in two colours and four different alpha layers for hiding parts of the body (you'll need these as soon as you want to turn BoM off).
The Extras box is definitely worth looking at; whether what you'll find is useful for you is up to you.
The Skins box contains the very same skins you'll find in the Extras box. However, it doesn't only contain the wearable skins for BoM. It also contains five textures per skin, two of which are meant as thumbnails for the HUD. If you've found one of the skins from the Extras box to your liking, these textures make it possible to use that skin with BoM turned off by adding it to your HUD (unless that particular skin is already on the HUD).
The other two boxes are rather special. The Resources box has the Skins box already included. On top of that, it contains the box art, the textures used on the HUD, the Ada Radius eyes that you can select on the HUD, but as wearable classic eyes (one of the reasons to get the box unless you've found better eyes elsewhere), and an underwear box that contains a pair of briefs not found in any of the previously mentioned boxes (the other reason to get this box).
The Mesh Uploads box is of no use for end users. It may be interesting for those who want to make clothes or other accessories, for it contains the various raw and unscripted meshes. Even then, you'll probably also want to take a look at the Github repository as well.
That said, if you really want to get the best out of Roth2 v2, look for third-party content. Not only will you need flexi or mesh hair since Roth2 v2 only comes with one hairstyle which is even only available in the Extras box, but you're likely to find much better-looking skins elsewhere. Don't worry, Roth2 v2 is textured in such a way that classic skins made for "duck feet" should work perfectly well on it.
Places to go for accessories for Roth2 v2 include:
Klamotto (
https://opensimworld.com/hop/78282; caution, this place doesn't support BoM, so I suggest you go there first and take everything with you that you think you may need, including make-up from Deva Moda in case you consider going androgynous at some point)
Astralia ShoppingCity (
https://opensimworld.com/hop/85405)
La Tortuga (
https://opensimworld.com/hop/76639; there's much more to find for women than for men, but it offers the only pair of swim trunks that works on Roth2 v2 if you absolutely insist in having a bulge, and it saves you a trip to an old Linda Kellie mall because it also offers Linda's pre-Clutterfly stuff in boxes)
And if you still need the body and the grey boxes, there are various places where to get them, for example:
Shopping Village (
https://opensimworld.com/hop/86910)