do not just look at the brand but more of the support.
Consider the ff:
Press side:
Plate quality ( spot and dot size )
Plate durability and reliability ( run length)
Plate availability (supplies)
the availability of support unit to process your plate in case your ctp backdown
Prepress
Software support ( technical )
Hardware support ( technical)
Business side
Power consumption
Chemical consumption
Parts replacement ( laser especially )
Unexpected cost - you buy this, you buy that, before installation
TRAINING
YOUR STAFF
Make sure ctp means Computer to plate not COMPUTER TO PROBLEMS