9810 - you're getting a couple more features for your money with a large touch screen plus a physical keyboard and more memory
9860 - you're getting a higher resoultion screen, a thinner phone, a nicer form factor
both do hd video, have decent cameras with auto-focus, it's just nice to have the slider keyboard as an option, but the 9860 virtual keyboard is still good though
i don't mind the 9810's design, but it isn't the most attractive of the bb7 phones according to some, i really do enjoy my 9810 though
both are pretty cool in my opinion, but up to you really, both also have mobile hotspot available either officially or through a leaked os, either way, great feature to have
