I like my MCs with Maximum Authority. It's all about the confidence. Minimal rhyming too, please. Not none, but certainly not endless skibadadibada.
GQ is pretty much the blueprint for that style. His voice just commands. Pure consistent too, right up to this day.
Dynamite, on his day was breathtaking - I have a tape from a rave in leicester with Roni Size. Again, it's the authority. You fucking jump because he's fucking telling you to, right? When he asks for noise, you fucking make it! Just spitting the lyrics - all leicester crew, all derby crew. I've never heard the midlands sound so slick!
Ragga Twins of course. I'm not sure I have strong opinions on many others that youse would have heard of. MC Stitch was the best one in Dublin anyway!