What are you thoughts about Canon? I just brought one recently. It has an option for me to opt into disabling support for third party toner cartridges. You read that correctly. It lets you use third party toner cartridges by default and if I do not want to be able to use them, I can opt into disabling them.
On the other hand, Brother prevents cartridges from being reused more than once, which likely kills the market for remanufactured toner cartridges.
I bought a Canon (model LBP612C/613C) color laser printer 3 years ago and have been using 3rd party toner. The prints are great and I've never had a problem. Prior to that I used a Brother b&w laser, also used 3rd party toner, and never had an issue with that one either.
On the other hand, Brother prevents cartridges from being reused more than once, which likely kills the market for remanufactured toner cartridges.