605, or 705?

[saprano]

hi, its me again asking for some input on these receivers. now as you can see in my sig i had already chosen the onkyo 605 from what i heard about it from this website(and avs forums) now the thing is i have the money to get the 705 easily ( heck even the 805, but i do like to save so forget about that) but ill admit it im a cheap ass everyone says the 605 is good ( and it is) so i went with the cheap one. but today im finally making the purchase and im having second thoughts about the 605, its a good receiver, but im wondering should i go with more power if i have the money? or does it really matter? to let you guys know again, it will be hooked up to a ps3, 40'' samsung, and this system http://www.definitivetech.com/loudsp...inema_800.html and ill be changing the 8" sub for a 10" one at 300 watts. so, do you guys think i should stick with the 605, or go with more power and get the 705? your input is greatly appreciated