fwiw, forget glass beds, forget the std alu bed, the single best upgrade you can do is the PrintinZ flexi build plate, this is well worth the £50 it cost me, i dont hardly ever have any failed prints (not the beds fault, mine due to lack of experience).

after that i have only just started using simplify 3d, but have had prints i could never get printed before, just working as they should, ok so i still have some issues with the software, but im sure thats just settings that i have yet to figure out.