Have a onkyo TX-SR600 Receiver. We are building a home theater room and have budgeted up to $2000 to purchase a new receiver but have been told that we should look at seperates. Have no hands on experience with seperates but it looks like to buy both amp & pre-amp is out of our budget. So would you buy a new recever - suggestions have been Yamaha 2400 OR would it be a consideration to buy a amp for the current receiver and in a year or so build on amp and upgrade to a pre - amp when we saved a little more money. Trying to look at all options - should this even be a consideration? If so what amps to look at?