I don't own a Q1 pro, and my only experience prior to my current printer was an ender 3 pro.
But I bought a Qidi Plus 4 a couple of months ago and have been extremely happy with it. It's fast, reliable, and has the heated chamber and high temp hotend. Multi-material is supposed to get added via the Qidi box in the first quarter if you wanted to add it on later.
I haven't printed any engineering grade material on it yet, but all the reviews I've seen say it's a piece of cake with advanced materials.
Ah, yes. I overlooked the budget. Well, I can at least attest to the quality of Qidi brand out of the box. Not sure on longevity, but I'm impressed so far.