Have you actually played one of these kits? The only reason I say is that the all rubber pads aren't to everyones taste. The mesh heads on the roland kits are certainly more realistic than the rubber pads but you'll end up paying a bit more for them.
I play drums and went to play a Roland TD12 last year when I was thinking of getting an e-kit and if I'm honest I was really disappointed. For £2k it didn't feel particularly nice and the cymbals were a big let down. There's nothing drastically wrong with e-kits these days, but make sure you play one BEFORE you buy.
Depending on how adventurous you're feeling, it's possible to convert an acoustic kit to mesh heads + triggers for about the same money and you have an acoustic kit for the future if you need it. I bought a TD3 (£150 from Sound Control), the raw materials(Piezo triggers, Roland Cones, mesh heads, etc) and have two drums that trigger exactly the same as the Roland mesh pads.
The next step is to buy a cheap second hand kit (Pearl Export, Mapex Voyager etc) and do a complete conversion. PM me if you'd like some more information.