In my current setup I have a lanzar opti7001d wired at 1ohm( rated 5100rms) I hear my amp does pretty close to rated but I'm thinking I get a decent amount of rise. My freind is offering to buy my amp for 750$ which I just paid 780$ for. I was thinking because my buddy is a ss dealer and could get me the rubi 2500's for 580$ new for both. Now with them strapped at 1 ohm( each amp seeing .5) would I be able to get more power outta these amp then my opti? Would it be worth the swap and the money savings or will I be disappointed?