"Hello, my name is ledded, and I am a Blood and Vigilance superfreak."
"Hello ledded!"
I have to agree, BnV is also my favorite supers system. I am a huge fan of the d20 Modern base, because it's so easy to extend, add on to, customize, etc without major rewriting of all the mechanics, and BnV is completely in that vein. I was able to do pretty much everything I wanted to do with a supers system by just adding it to my d20 Modern game, and it was fast, easy, plus Vigilance/Chuck Rice has always been really good about answering email/forum questions as they have come up, so you can pick the rather aimiable author's brain on a variety of BnV related issues. In my sig is a link to a supers-heavy story hour called "We were like gods once..." that I wrote that was played using BnV if you want to see the kind of weirdness that players can come up with.
Not that MnM is not a good game, but if you are looking for something easy to pick up, cheap, and lets you use existing d20 Modern mechanics (i.e. short learning curve) this is your boy. Since it does use hit points and whatnot, it can get a bit grittier than most supers games, but I like it that way so it never bothered me. It is definitely worth the price of admission many times over.