Is insanity a good idea?

masumaj

So ive got shaun T's insanity workout but is it a good idea, ive done jillian michaels 30 day shred, a bit of the extreme shed and shred as well as ripped in 30 but im just sick of her voice, and i think i just need a change. insanity does seem promising

anyone who has done this before or anyone else do you have any suggestions?