I am going to buy a sytem in the next 6 months to replace my onkyo htib. My reciever is going to be the emotiva umc-1 with the xpa-5 or upa-7 amp?( any opions on this will be aprecciated as to which amp) i want to spend around 1750 for speakers. So here is my delima, I will use the system 70/30 movies to music and am lost if i should  get the 4t system which got good reviews, the 5b sytem with the 8d sub or a custom kinda mix of 6b's in front with the 5c, and 4bs for surrounds with the 8d sub. my living room is abou 22x15 with a large opening (12ft) to the dining room. im not sure if the mix and match would work or not but i figure the 6bs up front with the 5b might offer better sounds as alot of the sound comes from these and the 4bs dont carry to much of the load, i am not a audio genius and this is my first venture at a good system. would it sound good or would one of the matched sets be better and if so which for my room size and budget?