A pretty cool option is a PWM Solenoid... you can electronically control your boost with crome.

Good setup I think, different maps go with different levels of boost: Phearable.net - Electronic Fuel Injection Tuning Solutions - Hondata, Neptune, Crome, Ectune, AEM, Honda Tuning, Widebands, Fuel Pumps, Turbos, ECU Chipping, Chipped Ecus

Manual boost controllers are probably least likely to fail, however- and also the cheapest.