I did not want this to get buried in the "Ode to Bolide" thread since it is a very long thread, so I started a new thread for quick reference. Hope you all are ok with that. I have been wondering those who have owned either size...once you purchased and used the one size were there any regrets and did you wish you chose the opposite size? Can you share your viewpoints on this? You know...if you bought 31, did you realize after a bit you should have purchased a 37 or vice versa? OR If you own one now, please let us know the pros/cons of your size.