I will be happy to tell you what I think you should avoid - and clearly state I do not have first hand experience with most, but watch a lot of you tube:
Avoid the Xiegu G1 - have not heard good things, to the point I stopped watching videos on it.
Any of the QCX products will be good - I just ordered a QCX plus kit (3 weeks ago), no idea where it is, but hopefully on the way. But like you say, single band is limiting. I want to build the kit, and will only use it portable so not of concern to me. I also think eventually I will end up with one for 20m, and one for 40m, and be happy with those 2 bands alone.
Pixies, etc - no. Very broad receiver, limited power (sub QRP sometimes). Fun to play with, not fun to use.
Poster above me has some great suggestions.
Ham Radio Crash Course just posted a video of his favorite CQ only rigs - like in the last day, I have not watched it yet, but bet it has some good suggestions.