Cobra makes some very good sights. Depends on what kind of hunting you do. I like to go to Colorado and out west you need to go simple, rugged, and dependable. So I chose a mulitpin Cobra. The pins have flourescent liners so they light up and the dots are very small and won't cover up your target. Whatever you buy, I would suggest spending some money and get a good sight that doesn't require much adjustment.
MissouriTrapper

of the sights you mention I like the copper john , had a trophy ridge and it would move, evan when I replaced the thumb screws with allen screws and cranked it down

We all have different oppinions , if we did'nt the world would be a BORING place

I used the copperjohn deadnuts hunter last year and think it is a great sight. It easy to adjust and as tough as they come. It has big allen heads on the pins and sight bracket. That big orange ring around the pin guard looks nice when their is a deer centered in it. I will be putting one on my new Mathews LX this year when it comes in.

i like the matrix by trophy ridge also

try the scrape-juice e-z sight.i bought one this year and its awesome. i took 6 animals this year from 5 to 40 yards from ground and tree and its very accurate.it gets on target quickly and easily and works great.once sighted in it makes any shot that you encounter possible with great accurracy.

I purchased the 5 pin Trophy Ridge Nitro Extreme and have been extreeemely pleased with it. I will agree with one of the other comments about the brightness of the sight pins if you are practicing indoors. Other than that I think it is well worth the money.