Just saw Cooler Master Seidon 120M for $25 after MIR
on newegg. I think that's a pretty sweet deal for an entry level AIO. Apparently the mounting mechanism is one of the easier ones also.
Main: i5-3570K, ASRock Z77 Pro4-M, Asus GTX660 TOP, 120 GB Vertex 3 Max IOPS, 2 TB Samsung EcoGreen F4, 8GB 1600MHz G.Skill @1.25V, Silverstone PS07B
HTPC: A8-5600K, MSI FM2-A75IA-E53, 4TB Samsung SSHD, 8GB 1866MHz G.Skill, Hand-Built Wood Case