I've decided to delve into the whole "strobist" thing. I'm considerin the Vivitar 285HV to compliment my Canon 430 II. I'm looking at buying the BH Impact umbrella/stand kit and was wondering if the Viv would be the most affordable flash as a second for doing portraits? I'm trying to be budget conscience as this will be my first foray into this. Would a cheaper flash serve the purpose as I am new to it?