Anything involving a PC board since lead free solder left the factory with a limited life, with a built in self destruct mechanism. That's reality.
Plasma isn't magic, and it damn sure isn't cheap. Cost of cutting per foot is equal to O/A and if you aren't going to recoup your costs you're better off not having plasma. Mine is a 25 year old Thermal Dynamics, transformer driven, with consumables that are still available at high cost.
I've only been running Plasma contraptions since they ran on a mix of 3 gases, so I think I'm somewhat qualified to comment on plasma cutting. Over the last 10 years I've watched a few SuperSalesmen import container loads of machines, fling crap at customers, and sneak off to hide when the crap came back off the fan.
Before you get into plasma, accept that you will either install an air source capable of delivering very dry air or you will spend more than the cost of the air system over time on wasted consumables.
Then go to Hypertherm's web site and learn about plasma and what can be done with it. Hypertherm is a US company that is now employee owned and destined to be around for a long time. The company was built on honest representation of product capability and products that deliver what the company says they will.
I have experience with Hypertherm, Lincoln, ESAB, Miller, Thermal Dynamics and a number of off shore plasma machines, and MOST IMPORTANT the customer service delivered by every one of those manufacturers. If you own plasma you WILL need service from the manufacturer at some point, and you'll get that service from Hypertherm.
If I buy a new plasma cutting machine it will be Hypertherm!