Vee brake:
Plazmatic CRV pads - expensive, price varies from shop to shop, check eztrials
Extremely grabby on clean rims, modulate a fair bit on ground rims, last a fair while if not dragged, rubber is very thin, backing is really fat. Metal backings, red or yellow rubber (depends on the shop, the trialsin' shop in Canada stocks the red ones if the red floats your boat).
Plazmatic V-fly pads - cheaper than CRV, check eztrials.
Grabby on ground rims, modulate a bit better than the CRV on clean rims (running them front on a clean rim, rear on grind). Holds well on either surface, works better in the wet on a grind than a smooth rim. Pads are squishier than the CRV, you might even see the pads squish under the brake power. (Y) Good pads for the price, a bit thicker rubber than the CRV which is always good.
I've used the CRV pads before, they're really nice on both grind and smooth, and am currently using the V-fly pads front and rear.. They both squeak a fair bit on clean rims, but tend to get more silent on a grind. Great pads to sum it up, best vee pads I've tried yet.