What are the companies that are easiest to hardest to get sponsored by? (1) being the hardest, (2) being the second hardest, etc. And, if possible, what kinda deals/stuff do you get? What companies have the the best perks for their players? E.g. comparing a person sponsored by Wilson with a person sponsored by Babolat (imagine that they are exact same ranking/skill/etc.) - who has more (or better) perks? Do you get a better and better sponsorship as you improve in the rankings? Are some companies faster to award more stuff for less improvement? This is the kinda stuff I want to know. Thanks!