650D, the side panel is revolting, it is the most hideous side panel I have ever seen. Looking at the features, it look like a 600T in the shell if an 800D...Problem with the 600T design, the top 200mm exhaust is too far forward in my opinion, it should be right over the motherboard to suck all the air out.
Also have you looked at the Coolermaster Storm Sniper? It's like a 600T but with better airflow.
EDIT: Neither the 650D, 600T or CM Storm Sniper are full towers.