What should I expect if I buy the Qidi Plus 4/Max 4?

I'm strongly considering the Qidi Plus 4/Max 4 over a Bambu H2S. I'm coming from resin. My last FDM printer was a Flashforge that crapped out about a month after I bought it, which soured me on FDM printers for a few years. I have some things I want to print now that are too big for resin and require stronger materials, so it's time for an FDM.

How reliable are these long term? Have issues with the boxes been resolved? What modifications will these require out of the box (I've heard a riser is a common and recommended modification due to the angle the filament feeds at stock)?

I was considering Bambu due to how plug and play it is and their reputation for just printing without hassle and being reliable, but the Qidi seems to be a better value, I just want to know what I'm getting into with it and if it's going to be a headache or something that craps out after a few months. The Max 4 is especially tempting given the extra build volume at a price that is basically the same as the H2S w/box.