As Ken and I mentioned, the weight and being portable.

I've never personally used a PU205. We sell a ton of them. I have used a PP50 and would order another today if needed. I forgot the PU205 had an S45.

It's really up to you. I don't like things bundled, more parts to break and parts to store. But if it will stay as a plasma only most of the time, your logic is sound dollar wise.