is the jasper model of the 360 really that much more reliable?

I have a 360 elite that was made 1/10/08. I bought it in april 09 on ebay. I got e74 in may. got it back in june. got 3 rings of death in june. fixed it yesterday and have e74 again!!!!!! what should i do? should i keep use the towel method again since none of the "perminant" fixes have worked? Or should i get the jasper model? is it really that much better? I really really really need your HELP!!!!