When I was researching it seemed AKAI stuff and the pK were the best options for pad sensitivity and durability. The NI stuff is in there too but they have such a variety of products not necessarily geared towards proper finger drumming. Lots of more loop trigger oriented devices like you said... however the ones they DO make specifically for smooth pad controlling are supposedly the bees knees... but are WAY more expensive. Like $900 kind of expensive.
Sounds like you'd do fine with an AKAI (around $300) or a pK (under $200). Just check reviews and vids and I'm sure you'll find what works for you. That's what I did and I knew NOTHING about MPC stuff before I started researching last winter and ended up with the pK.
If I had the dough though I think I'd rather have an AKAI. Cheers.