What Christian Spaeth said is true, i am actually still using 211s with um200s and they work like a charm. My other main radio mics are 411s with smqv, and don´t get me wrong, you can´t beat that, more battery life, more RF range, more conveniency changing freq, remote ..... but sometimes i even get the feeling the 200s sound better using the same lav, that may be just me or just an ilusion, still, pretty happy with the 200 series.
My 2 cents on this is, if you can, go Lectro over G3 without a shade of a doubt, you´ll be way happier on the field and someone will be happier in post (so will your clients if they appreciate good sound). Once this decision is made everything above the 200 series (included) will work great omho, just spend the time investigating which blocks work best in your region because getting the "wrong" block can definitely give you headaches even if you buy the higher end 1 block digital hybrid lectros.