There are 3 brands out of almost 15 different brands that I have tested which were any good.
But before that, you have to keep the balls at room temp or they die on you, no matter how "good" they are! If you just dump a box into your garage or trunk, dont expect the balls to perform up to your standards.
With that said
1. Wilson US Open (great bounce, mid-low weight, medium visibility, mainly used for D1 matches. These balls die out in two weeks of hard hitting)
2. Pro Penn ATP (decent bounce, low weight, medium visibility, D1 matches and practices. The balls die out in a week and a half or less)
3. Dunlop GP (great bounce, high visibility, have not been used for local D1 matches but used for practices. Surprisingly enough, the DGP balls we have received last quite a while. After intensive practices, the GP does get more bald but the bounce stays for an average of 1-2 months)
Also, it depends on your tennis courts. If you have a fast tennis court, the fuzz comes off fast. If you have a slower court, the balls last longer.
SO for me, DGP are ideal for the budget minded who does not mind shelling out a bit more cash at the beginning.