What is the most popular HD pvr and application that helps record commentarys

The haupauge HDPVR $180(I think) Some commentators I know just use Audacity to record their commentary and Sony Vegas (but it's just to god-danged expensive so just type in "Sony Vegas for free" on youtube to get it) That is pretty much all I know. As for intros, there are people on Ytube that will make you a good intro for about 5 bucks.