Robyn, Sculptris is awesome for detailing but it instantly weighs down your model in polies on import.

i haven't attempted to make clothes yet but I just found a side bar in Mod Tools where it apparently does that too. Although a freeware program specifically focused on tailoring might be cool. =D

Have to give you a big kudos for being able to get use out of Blender. Ten years ago when I originally attempted all this stuff, I was studying with Truespace, 3D Studio Max, Cinema 4D and Blender and Blender was the only one that I could really call my own because there was no way that I could afford the others. Unfortunately, however, I couldn't even begin to figure out how to set up Blender's screen.

The 3D Studio Max Bible and hand on experience all came back to me when I picked this up again recently and it makes a lot more sense now!

As for Silo, I have the trial and it hasn't buggered up on me but then again I really haven't got my hands very dirty with it. I just inspected the menus to see what it could do (like exporting geometry through render into obj files when the trial runs out (mwahahahahaha). I also inspected it to see if I could get along with its interface. I'm sort of fifty, fifty with my opinion of it right now.  I think I can do the same things with freeware modeling apps to be honest so I don't think you're missing out on too much. =)