KONIs are probably the best OTF shocks out there hands down... as far as the D2s go a decent amount of Nissan folks use them, they're decent for the price, but from reviews they (like alot of low end jdm stuff) tend to be oversprung/underdamped. here's a shock dyno courtesy of honda-tech http://www.slebidia.addr.com/images/...2%20Fronts.jpg
http://www.slebidia.addr.com/images/...D2%20rears.jpg
not very digressive in its curve and on the rear shock the difference isn't that big amongst the different damping levels... but still, for the price they're not bad, up to you if you go the conservative/proven route of KONIs or D2s.