I test drove a used first gen. TSX with 6 speed, when my buddy was looking for a car. I found the engine wanted to rev... meaning, it would happily go down the road at 4000 rpms's while, say, other cars would happily go down the road at 2500. I find that to some degree, a car with its particular gearing and its propensity to rev (or not) will have a "happy" point.
I found the 6MT on the TSX to be very, very easy-shifting. Flick, flick, flick type action. Actually, very nice.
While I did find it a really nice car, I felt that due to how it "wanted" to be driven (by way of revs and shifting) - I felt it would wear-out sooner than the less high-strung cars we were trying out. Now, some would differ with me, in their assessment - but however well balanced an engine is, all things being equal, the one that revs higher will typically wear out sooner. And in like manner, the flick-flick-flick shifter that encourages quick and numerous shifts... will ultimately pack it in sooner, due to this carefree (and frequent) use.
If I found it so care-free in revving and shifting, I wondered what the previous owner did, as well...? Tended to abuse it?
I enjoyed the TSX drive - but I concluded that the Accord would work better for me / for my buddy.
If I had had access to a TSX from new... I would have bought it and taken good care of it.