Hi I need a few words of advice in choosing the correct rims for my Yeti 303 build. I want to go tubeless this year and since I am at the stage of planning my wheels I thought I ask people about their opinions and recommendations. I will be running Michelin DH16 at front and Michelin DH24 at rear. The question comes down to deciding on one of these rims: * Mavic 823 with Michelin DH tubeless tyre or * Mavic 721 with Stan's Notubes and Michelin DH tubeless tyre. I weight quite a bit, 260lb ride ready so please take it into account whilst helping me choose. Also, is it possible to run mavic 721 with stans but without the sealant? The reason for that question is that I will probably only have one set of wheels and lack of sealant makes changing the tyres much easier and less messy job. so, what's your recommendation?