Ill jump on the bandwagon here and sugest that if you dont have a practical brain in your body, then leave the fixings to someone who does. But if your willing to take the risks then do it yourself. OUr Boema was re-built by me, but oh geez I had a lot of advise from a lot of people who knew far more than me too.
As to which brand is cheapest? hmm good one. Nothing is cheap. My advise here would be as everyone else says, Buy Quality, Buy Peace of Mind"
Anyone else think differently?