you have many choices ranging from synthetic or non-synthetic. Everyone seems to have a brand that they've had good luck with and they stick with it. Seeing as how you asked though I will at least throw in 2 different brands that I've used and had excellent luck with, they are Mobil 1 ATF and Amsoil ATF. Both are synthetic and both provide nice smooth shifts.

If you don't want to pay the price of synthetics than any good Dexron II/III is what is recommended. I've attached a data sheet on ATF's that I did about 6 months ago for your reference. It may help you in deciding what's right for you!!

Enjoy and good luck,

ATF Product Data Sheet

Kinematic Saybolt B/F
Brand VI Flash Pour cST @40’C cST@100’C SUS@100’F SUS@210’F cP@-40’C
Mineral Based ATF’s
Chevron 172 396 -54 37.5 7.5 190 51 15000
Pennzoil 182 399 -71 34.35 7.23 161.1 49.9 17200
Quaker State 191 378 -50 33.32 7.24 168.7 50.4 20000
Mobil 184 370 -45 36 7.5 --- --- 17400
Valvoline 190 --- -39 36.1 7.7 183 52 17500

“Higher Mileage” ATF
Valvoline Maxlife 169 396 -51 36.73 7.31 --- --- 16563

Durablend ATF’s
Valvoline Durablend --- 356 --- --- 8.0 --- --- 15000
Pennzoil 201 374 -40 34.58 7.68 --- --- 9440
Quaker State 4x4 198 403 -67 34 7.5 171.9 51.3 10500
Synthetic ATF’s
Amsoil 188 446 -72 35.2 7.5 --- --- 7150
Mobil 1 198 428 -65 35 7.6 --- --- 6200