I grow in small 2-3 ltr pots for the same reason. I like to cram 6-7 flowing plants in my 2x3 tent...gets crowded but the fun of watching several strains flower is a kick. I never grow for yeild, only for healthy plants and variety. One to wake me and get my old ass going and motivate, one to coast through the day and one to knock my old ass out!
I too like smaller plants but it seems most are taller strains now so I just top everything. Then there's always a damn mutant that bullies for more space but I love it.
What do you grow to get your old ass going / motivation?