I have a 2004 TSX and while you can rev it to the moon the big four is pretty torquey down low as well. Its not buzzy at all despite the 7300rpm redline. It is a seriously nice motor with the 6spd manual. Although it does rev higher on the highway you can't tell except for reading the tach. Can't comment on the seats as they are different for everyone.
yes it does have a high redline, but my test drive of one soured me from them forever. It also was a 2004 with a manual, and I found it gutless after driving a MS6 and a couple of turbo Saabs. I just kept thinking it was too small/underpowered a motor for the size and class of vehicle, and needed to be thrashed to get it to go anywhere. Would much prefer a manual Accord with the V6, for example. Although Honda seats I can never get comfy in, same with Subaru as well for some reason.
Don't get me wrong, i love a manual and NA motor that revs out (read: my Alfa) but in the Acura it just was not a rewarding experience. Sorry, but those were my impressions. I really wanted to like it because they are reliable and cheap to run.