Well I've ordered a lot of arcade shooter PCBs from them, and they've all been excellent, and no boots. One thing I always do is to verify that the pcbs I am getting are original and not boots. As nruva correctly pointed out, their newer games are usually not boots, and I got quite a few very nice MVS carts from them, like S1945+, Ganryu, NitD, MSX, KOF99, MOTW.
Shipping can be expensive, but that's where pulling together a larger order with games for multiple people helps; you can spread out the shipping/wire costs over multiple games and come out better yourself. Also, always ship via UPS, the EMS shipping can be slow. UPS shipping comes in a few days, very fast.
I got some great shooters recently from them, including Raiden Fighters, RF2, RF Jet, Viper Phase 1, Battle Garegga, Battle Bakraid, Twin Cobra II, Batsugun, Strikers 1945, Gunbird . . . and their prices for shooters are among the best I've seen anywhere!!
Oh, and wire transfer is the easiest and fastest way to pay, but again as nruva pointed out, the fee is usually $30 per wire. Get multiple people in on the order, though, and you can spread out the wire cost as well . . .