my G4's served me well so far for a good 9mths now. no issues, cheap and for street is perfect and they sit very low with lots of room to go lower. G4 = D2. racing logic is same build quality but different factory from G4/D2. BC is REALLY good build quality for the price u pay. BC makes the relabeled apexi coils
u also gotta think about rebuild costs, some of those jap ones cost alot of moolah for rebuilds, teins can cost up to 400$ a shock for rebuild depending on how stuffed it is (base on a scan of a bill i saw from another guy who owned teins and had 2 of them rebuilt for 800$ total)
u can get g4's rebuilt at justcrap for about 80$
and a shitload of spring selection for pretty cheap