I unfortunately and not a DIY kind of guy, so buying would be my method.
Yes that helps a bunch, thanks guys. Now where can I purchase them? I have looked on music123.com, musiciansfriend.com and guitarcenter.com with no luck.
You might consider this ... you really don't need to come to the same answer for each pad in your lit. In fact, some nice kits come with a different snare head than the toms/kick.
Depending on your playing style and musical tastes, your snare will likely take to most "beating" - meaning that you might consider springing for a top quality mesh head for your snare (e.g. Roland), but stick to the cheaper mesh/DIY heads for your toms. Remember, although the "feel" may differ (depending on your set-up), the drum sounds are generated by the module or VSTs, not by the pad heads.
Personally, I've got a combination of Roland (on a PD-120) and Bill Blast with center pad (kick), and Pearl Muffle Mesh on most toms. BTW, they're all holding up perfectly after 3 months of daily playing - NO signs of wear yet, even on the cheapest heads.
Of course, at my age, I'm not smashing away with heavy sticks and perspiration ... it's mostly jazz, bossa nova, and rudiments, so maybe that has something to do with the longevity.