I am getting excellent results with Grey Pro/LT tank, not a single issue to speak of… except the raft removal.
Getting Grey Pro rafts off the plate is by far the most difficult part of the process. Using the provided “crowbar”, or really any tool, results in local chunks of rafts being removed but the remaining whole is locked fast on the build plate. Tried cooling it off, and the flush cutter trick does the same thing. The only way I’ve found to reliably clean it off is clipping the printed parts off the rafts, and using the spatula to literally chisel the rafts off.