^He's correct. The GTM SC is very quiet at idle and low rev. The whine at WOT is a sound that any FI fan can appreciate. Both SC and TT are great options, but the SC is probably a better value based on cost and labor as it equates to the power and fun factor you get for each dollar spent.

^^(the exception could possible be an sts turbo system which requires the least amt oof labor to install and has the lowest price of any FI system)