I searched CR for criteria you list: reliability
, dimension, efficiency, usability/size and price. Whirlpool seems like it might make one that suits your listed reqs.
[Edit: our local Home Depot doesn't carry Whirlpool brand. I'll bet Sears does, though
This model number (though discontinued) might vary depending on where you shop and newer replacement models but you should be able to find a quite similar model. Here is what I found in the moderately priced, most dependable, top freezer with or without an icemaker.
Whirlpool Gold G9RXXFMW[Q] approx. $800
This 18.9 cu.-ft. top-freezer Whirlpool Gold G9RXXFMW[Q] refrigerator has
â€¢ spillproof shelves
Maytag model ?
I couldn't find a CR review for a Maytag other than the highly rated 21 cu in top freezer. I looked in Home Depot online and as far as Maytag goes they don't list a model less than 20.6 cu inches with dimensions that might suit you (this 20.6 cu in is 32.5 in width and 32.6 in depth).
I'd suggest your search narrow you down to Whirlpool and maybe one other (NOT GE) unless you could fine a Maytag that was 18-19 cu in.