I think 1,000 for double the power is worth it. You will find that the mono blocks and the preamp work very well together. OK, then there is the Big cost to consider when you have to re tube or roll tubes.If you live in the south they will heat up a room in the summer so that might be a concern maybe not.Go with the Prima Luna it dosent get much cheaper too enjoy tubes! I use a prologue 3 in a smaller system and have really enjoyed its wide ,dynamic, sweet sound. I use Tung Sol 12ax's and Mazda Cifte 12au's and I use the Big 5r4/GYZ's from Holland for the rectifiers. The bass is tight and has a good punch. Hopefully you will use decent cables hooking all this up. The cables are like tone controls so you want to pick something that wont suck up the power and remains neutral to transparent. happy listning