The blades on my broadheads are pretty dull. Normally i just go buy new ones but I was wondering how good some of these broadhead sharpeners work today. The knife sharpeners that I have bought in the past have been less than impressive but that has been a while back. So should I just buy some new broadheads or can these be made razor sharp again?

If they are dull from shooting into a foam target, then I resharpen mine, BUT if they are dull and have nicks in them also, it's time to buy new ones!

Allen makes one that works pretty well for me, it's got 2 small ceramic rods that are set at the correct angle. Just a few swipes over the blades and they'll be razor sharp again.
I think I paid something like $15 at Wally*World http://www.huntingnet.com/forum/micons/m9.gif

I got an Allen too. It works pretty good.

I use a standard pull type tungsten carbide sharpener , it was $6 at Wally World , it does the job .