mg1 vs jelco 750l

I am pondering on whether to mount an MG1 air bearing arm or a 12 inch jelco onto my lenco gl75. I like the idea of an air-bearing, but I am concerned about the pump noise, and also general use. The Jelco 12 inch will bring about an element of convenience whilst also addressing the tracking issue to some extent.

please let me know what you think. BTW my intended cartridge is a Shelter 501 mark 2