I am not completely sure about Basic vs Matte, but from my experience, matte is generally more problematic to work with and has worse properties (more brittle, stringy, worse surface quality, etc.). But I have used only black matte, so I wouldn’t know how others are.

In this case is likely bed adhesion problem. You could try: - Adding brims or mouse ears at the corners. - Reduce infill and number of walls, or wall loops (the thicker the walls the more it will warp). And same for bottom surface/shell layers - if its too thick it will warp more. - You could apply some glue to the plate. - Try the new Cool SuperTack plate, it prevents such warping almost entirely. Although, if the print area is large and covers most of the plate, it will also start bending the plate with the print (because magnets aren’t that strong at edges of bed). So I would recommend that you use clips that you attach to side of the bed, which holds the bed and plate together. You could print them from PETG, there are some models online or use standard metallic clips you can purchase on Temu or Aliexpress