Prusa for sure—good quality, support, and availability. But for less money I’ve had good experience with the Qidi Q2C and Max 4, more open then Bambu (Klipper firmware) and good performance for the cost.

Does the filament exiting the nozzle make a popping sound while printing? Def looks like wet filament (I have absolutely received PETG “wet” in a sealed bag w/ desiccant) but if you to go after the thermistor and heater cartridge I recommend ordering extra, it’s a good part to have on hand.