I'm not a v-drummer so not the best person to ask but I guess your budget might have some say in what you buy.
The roland that Chregg posted is I guess a budget one as they can go up to $4000 I think.
I don't know how much bang you get for your buck or whether it's worth paying the extra but my guess would be the
more expensive kits have much better velocity scaling and more articulations.
As a BFD Eco & BFD2 user (and also currently a beta tester for BFD3) I can't recommend BFD2 highly enough.
Whether the roland HD-3 will get the best out of BFD2 I can't say for sure but I guess the more expensive kit would get better results.
Of course you can always change velocities and articulations once you recorded your basic groove so if that's good enough for you then you could save your self some money.
You can download the demo of BFD2 and obviously if you have Eco DV you get the upgrade price.
Hope that's of some help
Steve