According to David Vizard you are better going a bit tight on LSA than a couple of degrees wide. More under the curve with tight LSA. I would pick the Thumper cam.
I've heard that :) but if we look at those few lsa dyno shootouts and there's like 3-4.5 lbs-ft per degree and as you go tighter (110-101) they average less per degree would that apply here who knows.