Try before you buy as what suit others may not suit yourself.
Loads love i4's, personally can't get away with them as I find them too small
Grillz, nice, light, just upgrade the lense to a thermal
Eflex, the best of both worlds, good marriage between events and JT's
Profits, hearing can be a little problematic and a little steamy for me
Good JT Flexes, never go wrong with these apart from changing the lens