I was in the same position a few days ago, looking into a new printer, due to (imaginary) problems with my current Roland.
Quite honestly, I have read a lot about many brands, and got a lot of feedback from quite a lot of users. I must admit that although I have only had a single printing, I'm pretty much sold to Roland. I'm currently running a VP540, and am very satisfied with it.
What impresses me most, is cost of running the machine, and the quality of their builds. Also, I'm amazed on how many people use Roland, which is always handy, whenever you require assistance: no need to pay big dollars for tech support, due to the amount of people, ready to give you advice, tips and tricks, on this wonderful forum!