OK, there are to many reasons to go into on this topic. But long story short Thermal is the way to go. Unless you have a specific application where you require bond paper, thermal hands down has a lower cost of ownership over the long haul. Yes thermal paper is expensive, but you never need a ribbon, they are fast, easy to change rolls, and almost always have 75 to 100′ more paper on each roll. But the biggest reason is that thermal printers are very trouble free.
Hope that helps
TCRG