I've been using FP-10 exclusively for about 3 years. No complaints.
My own opinion (you know what they say about those!) is there isn't a nickel's worth of difference between FP-10, BF-CLP, and Slip 2000. What you read here are all anecdotes. One guy raves, one hates something. You can't sample thousands of users, though, in any scientific way, and the testing isn't comparable unless the procedures used are identical.
FP-10 is used by US and Canadian military units. BF-CLP is also. I don't know if Slip 2000 is, but it likely will be soon. Various custom gunsmiths recommend one product or another, and some are pretty high on FP-10.
I use FP-10. I'd probably be happy with BF-CLP. I'd probably be happy with Slip 2000. As Clark Gable said in the famous movie line, "Frankly, my dear, I don't give a damn!" Worry about more important stuff, says I. YMMV.
JPC