Sadly.... I think AMD is going to die off. I have bought mostly AMD CPU's for the last 12 years since getting an Athlon XP 2800+ in 2004 and being impressed with the performance I got at a discount compared to Intel at the time.
I have stuck around through socket 939, AM2, AM2+, AM3, AM3+, and bought a single AM1 Sempron 3850 Kabini 25 watt quadcore.
My AMD FX8350 4000Mhz 8-core is probably the last AMD I will buy new. Its plenty of processing power and AMD will likely fail before the octo-core needs to be replaced.
When it comes to Intel I have gotten all of those socket 370, 478 and 775 CPUs except for 2 x Pentium E5400 CPUs free or used. I bought into two Pentium E5400 2.7Ghz dual-core builds a while back, but the Pentium E5400's just seemed crippled compared to the AMD Athlon II x2 CPUs I had. The E5400's felt like they were Celerons performance wise and so those systems didnt run for very long before I went back to running AMD CPUs as my main systems. My wife I had given a E5400 and it was just lagging with mutitasking, I downgraded her to a Core 2 Duo E6600 2.4Ghz and the system ran better for games than with the Pentium E5400 even though online benchmarks show the Pentium E5400 being better than the Core 2 Duo E6600.