ethen, i have del's,bears and just purchased a bt 6oz twin injector, bears and bt both have there purpose i shoot 20 to 30 molds at a time i like bears for single colors very smooth injector. but it has a learning curve with the tips but not a issue after you get used to it., as far as lams i have both bt 6oz twin injector and blending block and bears system . i like the bt system for lams, less of a learning curve. the 6oz bt has is a big unit you wont go wrong with the 3oz .