Title almost says it all. I always found Line 6's tap tempo to be not too comfortable to deal with (in fact, this is true for plenty of others as well, such as Zoom). Especially when playing live (which is basically what tap tempo is kinda made for...) it's easy to tap a little off tempo. The way Boss and TC (at least the G-Force) handle this is a lot more elegant as they calculate an average tempo from the last 4 taps. It also doesn't matter if you only tap twice (or three times), in that case