Are you planning on building a bike from parts and do you already own a bunch of parts? It is a MUCH better value to buy a bike complete with good stuff at any price point. Parting a bike up is very expensive or you end up with garbage parts... like a Rogue frame or an ancient Skyway.
Skyway wall really cool and fairly cutting edge - 20 years ago.
What type of bmx riding are you looking to do? Street & Dirt? Flat? Race? It will greatly impact the recommendations you will get.
I guess I'll be doing street. I found a Solid Duke frame that looks pretty solid. I still want to go the build up route, even if it goes over my budget. I have a road bike and a freeride bike that I currently own and I want to add a BMX bike to help with basic trick riding to help my freeride.