My old MK1 was nice and worked well until the fan unniticed failed completly and I started experience crashes. When I noticed the fan didnt spin I replaced it but sadly it apeared the damage was already done. My second MK1 was in a tower and so heat was much less of an issue and it worked flawless the entire time I had it. MK2 only kept the scsi modular solution ans mem is now autodetect. MK3 has everything on one card, UWSCSI and twice the memory bandwidth together with a custom port for the CyberVisionPPC (and G-rex PCI solution).
Any card revision is good though as an uppgrade from an inferior CPU solution.
