The Bp7004 have built in subs which is nice since is saves room at the same time the subs in these speakers perform well. It will save you having to buy a additional sub. I have not heard the Def Tech Pro Cinemas but they do seem to get good reviews in magazines. Depends really on what you want out of the speakers in regards to h/t or music and how much money you want to spend.
thank you for your feedback. my budget for speakers/receiver is around $3000.00. i would be using it for mostly ht. i am still undecided between pioneer elite and h/k. and the 7004s or the mythos 2and 3 system with a supercube 2.