Re: Antec 300
the Cooler Master 690 case is good, it can hold up to 7 120mm fans, and its pretty spacey. Its a tooless case IIRC.
the power supply is also mounted on the bottom.
Desktop -Cooler Master NV690/AMD Phenom II X4 965 BE/MSI 880G-E45 Motherboard/2 x 2GB DDR3 G.Skill Ripjaws X/Sapphire HD 5870 1GB GDDR5/CORSAIR CMPSU-550VX/Seagate 7200.12 500GB (OS), Samsung F3 1TB (Storage)/Sony DVD Burner/Windows 7 Professional 64-bit