need help in choosing a projector

[Scott Jones]

I'm looking at a few projectors on ebay and I could use some feedback from those who might already own one of these...
BELL & HOWELL 10MS
Keystone model 442
HONEYWELL ELMO Model FP8-C
Chinon 727
My main objective is to find a projector with variable speed and a bright image to do transfers. I think all of these have variable speed.
thanks,
~Scott