Well I am burb boy. My 91 V2500 sub came with all the options except power mirrors (they would have been nice). It has rear heater, rear a/c and defoggers on the rear windows. The rear heater is just plain gay. Given, I live in south texas and its typicaly 70 degrees in january BUT, the heater is a ****ty design nonetheless. It is in the very back passenger side of the cargo area behind the wheelwell but it protrudes into the cargo area. It is basically the same as the front heater, core with electric motor and fan, all housed in a very flimsy plastic case that will get beat to **** if anything touches it. On my rear heater, one day it randomly started litterally squirting coolant all over my rear carpet, so I took the stupid thing out since I never use it anyway. Anyway, the rear heater sucks but I imagine in your area it would be worth having, but I would highly recomend fabricating a beefy cage to put over it and bolt down to the floor. On to the rear a/c. This **** is a godsend. As stated before I live in south texas where 100 degrees isnt uncommon in the summer, and a suburban is an awful big bitch to cool. The rear a/c makes a difference to people riding in the FRONT seat. My suburban doesnt have a 3rd row seat but the back seat passengers benefit greatly from that rear a/c. It is the shiznit. Since it never gets cold here, I've only had to use the rear defog once, but it sure was nice to have and has never caused any problems. BTW I have barndoors and it seems to me that there is an overwhelming bias towards barndoors on burbs, out of all the ones I've had or dealt with, only 1 has a tailgate. I have driven one burb with power mirrors and they look cool and are very functional so I'd say they are worth procuring. As far as other options, hold out for a 91 3/4 ton, the 4L80E is DEFFINATELY worth having. You get the strength and the overdrive without having to worry about shelling out $$$ for a badass 700R4.