Clen makes me too jittery and I never tried t3, so I have no idea,lol, but if i was to weigh the pros and cos that I know of, i would go with clen i guess. Just cause ive heard stories of guys getting fat from not tapering down properly with t3, but i guess if ya tapered properly then theres no problem,lol, so maybe i will like t3 better,lol
bottom line and moral to my story is i havent a clue!