Which is the best plasma cutter, hypertherm 1250, thermal dynamics 151, Lincoln 80, Miller 1000, esab 1500 etc

Miller has been my best experience. Though they are pricey, but they last for years like any...if you take good care of them. Also, they have the best product support for replacement parts such as nozzles and tips. Their welders are also top end stuff too. I live in the US so there are a lot of industrial supply stores that carry parts ad supplies.