Take a look at the Snuffer SS.
I think this design has it all.
Proper blade angle, adequate cutting diameter. ConC, very strong. excellent penetration, good blood trail. tunes and shoots very well.
I went with the Snuffer SS because of the warranty and I took a jewelers loupe, and examined the welds on the SS and found them to be the best.
Both G5 and NAP make a very similar head, take a look at all of them and decide.
The Slick Trick design, by who ever, leaves a bit to be desired because of the blade angle (IMHO). the short head is easier to tune for most, but, the Snuffer type also tunes easily.
I see no reason to give up penetration, when tuning is not an issue.
Good Luck
Here is an excellent test shoot, of I believe 14 different heads shot side by side out of the same bow, a long but interesting read with lots a video.
It will show you a bunch of good stuff.
http://www.broadheadtalk.com/broadhe...challenge.html
Leo