I started out smoking mostly robusto and toro size, but as I've progressed, I find that I tend to prefer a bit smaller in RG. I mostly smoke corona and petite corona size these days, although I still do go as thick as 50-52 sometimes. Length is only a factor in how much time I have at a sitting to smoke. If I have the time and an appropriate amount of scotch or brandy, a longer smoke is fine with me.