Hello TorpedoTom!
You check on remos web page
http://issuu.com/remopercussion/docs/remo_drumhead_catalog_2011/1on 32 page you have the specifications for Meinl profesionals.
On my woodcrafts I have L&H mule skins, I like them a lot, but i'm not playing a lot of them, cause my pearls fiberglass with remo fiberskyn are better heard with the projects i'm in now. But when playing with choir or nice ambiental setting or recording, the mule is the sound.
I like remo fiberskyns with tucked head, cause crimplock failed me once, and i don't want to be fooled again. About uskyn: I played them once on Matador fiberglas and I liked the sound very much, but the friend who had them wasn't so pleased with them, he said that they don't project much, which I haven't noticed, it is said that they have more traditional sound, less overtones, but to me they sounded great, Actually I'm thinking to buy them for my woodcrafts, just to have them and try them.
If you are scared to mount a mule on your Meinl proffesionals, let me tell you, that my friend has old model of woodcrafts and new proffesionals, all with mule skins, and they just blast away. I remember how did they sound with water buffalo skin and when he came to my place with mules... I had to get myself the same... Just to empower you to loose the fear of doing it yourself. I was anxious too, but people here help you all the way!
Viva Congaplace.com!
my 2 cents
PimpS