I've only ever had boys and they are lovely. Although saying that every ham does vary!
I like to give them decent space (70cm x 40cm I find is ideal for 1 or 2) but a 20 gallon tank would be brill also
I find that dwarfs are much less demanding than syrians and will often entertain themselves. In my opinion I love all the dwarf species, but in terms of one that will play and interact with you I'd have to say winterwhite/russian hybrid is the best
sand bath is an essential for dwarfies and its great fun to watch them roll!