i have VPM 6005. it's not my first enlarger, but one i started to get serious about my printing. before i had various russian enlargers.
kaiser is really good piece of equipment and i strongly suggest it. specially for that price. I got mine for around 600$ (starting price was 1k$)
just check letters before number VP = black and white (has filter drawer), VPM = black and white with built in filters (really handy + has filter drawer), VPC = colour enlarger