I'm not a fan of bleed valves myself just because ive known that many people that have popped headgaskets with them turning the boost up too high.
If you're going to buy a mechanical in car item then you need another one under the bonnet to limit how much boost the valve in the car allows. If you have just an in car one you can make your turbo boost excessively high until the weakest part lets go.
Ive also seen numerous 2 connection bleed valves on RST's but they should have the 3 pipe items so they waste back into the air box and don't create a small air leak (hence why the amal valve on a ERST has 3 connections, and a FRST has 2)
Don't forget electronic controllers control the boost curve and help reduce lag where as bleed valves don't.......
zippyobrien i have an Apexi myself which i haven't used yet, but after speaking to numerous people im told they aren't all they cracked up to be, one of the biggest complaints being the reliablility, and on that note my mate also shipped one from Japan which never worked
Christian and Beccy oooooooo very nice