I suggest trying a Remo ambassador coated batter head.
1) Get all the lugs on the batter side finger tight.
2) Start tightening each lug a half a turn.
3) Work your way around the rim in a star pattern. Do not tension one lug after the other in a circle pattern.
4) Once you get the head seated and close to medium tension -tap the head about a inch from the rim and work your way around the head in a circle. You want the head to sound similar when you tap. If it doesn't a slight turn (tighten or loosen-depending) of the nearest tension lug will be needed.
5) Repeat the same process on the resonant (bottom) head.
6) Now go back to the batter side head and work your way around it(star pattern) using only a 1/4 turn. Do the same on the reso head. Keep going from batter side to reso side fine tuning the drum making sure each lug has been tensioned equally. I always keep the batter side tensioned tighter than the resonant side. (For example- batter side= 85% reso side=76%)
7) Once you are close it could be as littla as a 1/4 turn on one or two lugs.(remeber the star pattern)
It never winds up that every lug is tensioned exactly that same as the others on a batter side or reso side when you are done tuning a snare. (at least it has never worked out that way for me) The trick is to keep the lugs tensioned as close as possible until you get to the fine tuning.
If you have a drum that has a little too much ring for recording etc. I suggest a small piece of moon gel-works great. Don't start taping toilet paper etc. to your heads with duct tape. It is 2009- not 1975.
This is how I go about tuning a snare. There are other ways(probably) but this is just how I do it.
Hope this helps out!