From a YouTube comparison video, the dude said it's a bit noisier due to the cheap plastic disc slider.PS3 Superslim model : has the advantage of being quiet, and even lower power consumption than slim model. Can do (almost) everything CFW does.
Cons: you have to launch Hen icon every time you reboot the console.
It's a shame the Top Loader PS3 looks so cheap and like a knockoff as it could have had a fantastic design.
Console Comparison:
The "Super Slim" doesn't look any more slimmer than the PS3 was.
I'd only recommend anyone getting the Top Loader model if they can find it for very cheap.