Nice, I'm personally in the same situation but I've been using the Jp 01-Turbo. Not planing on changing unless I get an opertunity to try it (M1-Turbo) and finding out it's better lolz. I did in fact do some research before I came to the conclusion of buying Jp-01 Turbo instead of M1-Turbo.
As far as I've understood the M1 is a litle bit faster than Jp-01 Turbo, but Jp 01 Turbo is still fast (enough).
Although the throw angle (on Jp-01 Turbo) is a tiny bit lower than Tenergy (at least 80) It's still a litle higher than M1. For me the Jp-01 Turbo's throw angle is perfect. I've also read the Jp-01 is more forigiving and more smooth when it comes to strokes.
(I am btw in fact using the Jp 03 on bh, soft-sponge, more control, longer dwelltime and better for my own unperfected backhand)
What you could do though, is to try a M1-Turbo(fh)/jp 01 Turbo (bh) combo the next time you buy new sheets of rubber, and then test a litle back and forth.
Maybe give a comperance review here, and then make your choice on rubber after a few weeks of play?
Links you could check out about this:
http://mytabletennis.net/forum/foru...&title=donic-bluefire-m1-turbo-and-jp01-turbo
Allso Donic's own ratings about them:
http://www.donic.de/index.php?screen=dstore.item.view&TreeNodeID=26394
http://www.donic.de/index.php?screen=dstore.item.view&TreeNodeID=26387&sid=1
Good Luck, both is good either way!