I've been playing for about 10 years now, and the backhand has always been a weakness for me. When I first started learning, my father taught me the classic one hander. Then at around 16 I tried the two hander, with better success. I've used the two-hander almost exlclusively since then (I'm 24 now), but lately I've been trying to go back to the one hander.
I can hit either way equally well (i.e. much worse than my forehand), with slightly more pace on the two hander. However, I prefer the versatility of the one-handed shot. It's easier to flatten out, hit up the line, and obviously to slice. I've been working in the gym alot lately to build strength, and I think to have a good one hander you need alot of shoulder strength and good technique. A good two-hander to me requires more core strength and is easier to groove.
According to the numbers, about 70% of the men's side (even more on the women's) is now using a two hander. What are your experiences and thoughts on this topic?