The Deck is still the king for a while in cost/benefit ratio and pure gaming performance, but I'd rather buy a GPD or Ayaneo products for the superior overall performance and usage as an actual PC when needed.
I'll be getting an used Ayaneo 2...
I'd argue the current Ally does a decent job of putting up a fight if you get it on what appears to be a pretty regular sale. I've seen it new at £530, with great condition pre owned ones going for £400 or less. Compared to the £479 starting...