I'd say Wanyama (Sunset) was first, followed by Sunrise, then Night Vision.
The only reason Night Vision is last is because it was a lot shorter than the other two, and because I'm apparently incompetent with night vision goggles - I couldn't see a thing!
Luckily you get close enough to the animals on the Sunset Savanna that you don't need the goggles, but you do need them for Pembe. Also, you can't really take pictures b/c you can't use a flash.
Wanyama beat Sunrise for me because I liked being on the AKL grounds during Wanyama better than the Kilimanjaro Safari route during Sunrise, just because I've been on KS a million times and also have done the Wild Africa Trek - the jeep portion of the WAT was very similar to the jeep portion on Sunrise. Also, the breakfast on Sunrise was a decent buffet, but the dinner at Jiko after Wanyama was delicious and definitely a step up from a buffet breakfast. Two things I really liked about Sunrise that Wanyama didn't have - we got to drive through the backstage areas of DAK for about 10-15 min before the sunrise safari, and our guides stayed in the restaurant during breakfast so we could ask them questions and talk to them.
You will get really good and close pix on both Wanyama and Sunrise safaris.
I hope that helps. All 3 safaris were fun, and each different from the other, and I'd do them all again. When we go back in Oct, we're doing the "dine with an animal specialist" lunch at sanaa on our anniversary.