I really only warm my blending block slightly. I rest it on my mic while heating plastic and it warms. I never warm my injectors. Never have an issue with the laminates but I have been using it now non-stop for a good long time. Just like everything else, the more you use it, the better you will get.
The big deal with the others is that the injectors are not connected so you can put uneven pressure on one injector or the other injector and also you ahve to manage both injectors and the blending block. What a PITA to move from mold to mold!!! You need lots of practice and patience....
Good luck with whatever you choose and I look forward to seeing those laminate baits!!
Jim