Well after one year in Arizona, I can finally say that I have given up hope on finding the best burger in Phoenix. out here burger joints are almost all the same in every way. thun patties & lots of creative yet unoriginal condiments and combinations. R.F. O'Sullivans will remain at the top of the list as Boston is the king of Burgers. Burgers to me should be tasteful, these patties are all well done and thun as hell. I ordered the super big great one weighing in at one pound but it just takes like burnt meat loaded withbsauce. Where are them thicc patties at?! not a bad place for a sit down but barely a a step above in n out.