If I'm being a little over zealous it's because I get a little fed up with every thread with an unusual prim request being press ganged by the blender brigade as if it's the only possible option.
The thing is, this thread is about Blender. The title says so, the OP says so, and so on. It's a Blender thread.
I haven't seen anyone talking about Blender as if it's the only option, in any thread, really. Sure, people (Including me) talk about it like it's great, if that's their opinion of it, but I have yet to see anyone act as if it's the only option, or try to force it on anyone.
As for the complete packages for sculpties.... I was curious, so I went through the 3d Software page on the SL wiki, and found 11 programs that offer sculpty support and texture baking.
AC3D (Though for texturing, I believe it requires additional plugins, beyond the now-included sculpt support)
Hexagon
Lightwave
Softimage
Modo
Carrara (Texture baking requires an additional plugin)
Cinema 4D
Maya
3DS Max
Blender
XSI Mod Tool
Not gonna lie, that's more than I expected.... also, I didn't include Plopp or Archipelis, due to their alternative methods of modeling.
As for those that also include a 'true sculpt' mode (A la ZBrush, though less powerful), that brings it down to these, which are the only ones of the above that I can confirm have that ability:
Blender
Modo
Maya (Why was this so hard to find? Only found thanks to a video, and my knowledge that it was there.)
3DS Max (Again, hard to find)
Also, of those four, all of them support user scripting, with Modo being the most universal, accepting LUA, Perl, and Python. Maya is perhaps the most useful for itself, including both Python and MEL. Blender supports Python, and 3DS Max supports MAX Script, which is in my opinion least useful, as it doesn't support any preexisting language, as far as I can tell.
For a couple other useful things that I've used for sculpts, softbody/cloth and particles are supported by Maya, 3DS Max, and Blender, but not Modo. Maya Unlimited supports hair, as does Blender and 3DS Max, but Maya Complete does not.
Modo does not offer any form of multi-prim sculpty export at this time, while the other three do.
Maya costs $1,995, or $4,995.
3DS Max costs $3,495
Modo costs $895.
Blender is free.
It seems like I'm saying Blender is the best, I'm sure, but I don't intend to. This is truly the information as I've found it. Beyond these base features, each program has its own unique perks and downfalls, and everyone has their own favourite.