It probably depends more on the styles of music you want to use it for than anything else. And we don't have that piece of information. Actually, more than style of music, since everyone has their own sound in their head, it might be better to know things like who's sound you like, how much you want to overdrive it or if you want a master volume/uber gain thing, do you need an effects loop or are you a plug and play guy? Reverb? Trem? Amps do A LOT of things. What do you want your amp to do?
I could certainly tell you what I would build for myself in a ten watt class A, single ended amp (I can even dress myself and tie my own shoes!). But nobody can tell you what you want. So, since the opening post sort of reads 'What do I want?', you might do better to tell us what you want and ask how to get it.