>p4merge is the best merging utility for any VCS
What makes it "the best" ? Honest question, i found it kludgy and settled for Kdiff3.
p4merge is indeed awesome. I work exclusively in Linux environments, but p4merge always gets installed. The experience has actually gotten better in that regard since git started supporting it straight as one of its 'mergetools'.
Also, p4merge is the best merging utility for any VCS, and I always install it alongside git if I work in Windows.