As far as I am aware, Beta air tools are all made in Taiwan.
My advice, where any of these Taiwanese air tools are concerned, has always been to buy the cheapest, irrespective of the brand name, as the tools are usually all the same, at least internally.
I recently bought an air saw for one job. The price varied between just over £20, to well over £100, for exactly the same tool. You got no better for paying more.
You will find varying views on these Taiwanese air tools. My own experiences are that provided you get them cheap enough, they are good value. They usually do what they are supposed to do, and are surprisingly rugged
The downside to the Taiwanese stuff, is that it is often not as nice to use as better stuff, and of course is not as durable. There is no getting around that. You simply cannot get a £50 Taiwanese die grinder, and expect it to work like a Desoutter or Dotco costing 10 times the price.
It all comes down to how much you are likely to use a tool. If you are in the motor trade, and you use a die grinder most days, but maybe just for one quick job, it will last an awfully long time. If you are making moulds or press tooling with it, and using it all day, then you will soon want something better!