New Home A/C Rec

[Skyy God]

So, this week my old ass, freon A/C stopped lowering the temp at all. Even before this week, humidity had been running in the 70-75% range. I refilled the coolant late last summer (after cutting the line), so I doubt it's a refrigerant issue. And my utility is offering a $400 energy efficiency credit.

So, any recs on a new A/C brand? Per Consumer Reports, American Std, Rheem, and Trane are the most reliable. House is 1625 sq. ft., so I think 2.5 tons is the right size.