For the budget build did you look at the Fractal Arc Mini? Would give better cooling than the Define. Also on the mid level build I would reconsider the A30. I love Thermaltake cases but the case has issues in the design. For example the 230mm fan at the top is blocked, almost 50% so by the PSU meaning it cannot get it's proper draw. Also there is no mounting location for the 120mm cooler you have with the Zalman. The front intake is 90mm. You might be able to rig a mount on a side panel but the case is really not conducive to the build you seem to be listing.