I actually plan on moving to a better drive system over christmas. I'm just looking to get my robot through Maidstone.

I'm debating between 775 with Banebots gearboxes (An expensive but much more rugged setup) or brushless drive (Though I'm still not sure about sensored or unsensored, hopefully I'll be able to have a look at how the brushless drives Shakesc's got run to help the decision). I'm still quite unimpressed with the GR02 gearboxes though.