When you say “the water slide transfers for gripping beast” which maker of shield transfers are you referring to, and are you referring to GB plastic or metal figures?
Battle flag sell some good dark age water slide decals, whether they fit will depend on whether you have metal or plastic figures.
I agree LBMS transfers are trickier than water slide, but many people prefer them as the artwork is fabulous and the colours are more vibrant.
I have been making my own transfers for the last couple of years using decal paper for my inkjet printer and I find that very rewarding.