Thunderheads are a good head. Rage are a Good head if you are looking for a mechanical.
IMHO the Slick Tricks are the best all around rpl bade broadhead out there. The 100 grain heads come in a Standard 1" cut, Magnum 1 1/8" cut, & the Grizz 1 1/4" cut depending on your setup and game you are after.
I have used the Grizz Tricks for 2 years and have had some Awesome results.
There are many good heads out there. Good luck in your search!
Dan