I have a 93 LX five liter. With a Vortech, AFR heads, cam, good intake, exhaust, fuel & ignition system, it makes 485RWHP. It also has big brakes, and the good suspension stuff from Maximum Motorsports, so it stops & handles. I bought it new in 93 and it now has just over 35K miles.
14 months ago I bought my S, and have driven it 11K miles since then. During the same period I've driven the Mustang 900 miles. While I still enjoy the Mustang, lately I've been thinking that it may be time to let it go. It's a blazingly fast, comfortable & reliable street car, and it wouldn't be easy for me to say goodbye, but it's become a garage queen since I bought the S.

 

I just traded my 2003 cobra for a F250 Diesel...... it was lightly modded (bolt on's with stock pulley) = 420rwhp. Ran 12.4@116mph in the qtr. I also have a stock 2003 Evolution which i enjoy more than the cobra.... the evo is fairly quick, much better steering and brakes and better room for my family.... not nearly the grunt of the Cobra, but enough...

 

they are worlds apart from each other but both provide loads of fun
personally i wouldnt drive an s2k everyday.....both are fun weekend cars
if you can get used to driving these very different sports cars, then i see no problem whatsoever'
good luck