If you get an offer from YC or Techstars VC. Take it.
Time and time again i hear about founders that have bigger egos then anything else rejecting offers from top tier VC's (like YC) and eventually leading thier companies to fail. If you do get and offer from top US VC's take them, dont be greedy and stay humble. These VC's will not only help you but will accel your business.
Any other accelerator is not the same
There is simply nothing else that compares to the quality of these VC's for PRE SEED investment. Almost every either VC in the wold is involved as these guys have their ears everywhere on what is working and what is not.
Dont have a big ego.
Building a startup is not about having an ego even though its your baby. Keep humble and if you do get an offer from these guys just accept and move forward. they can open doors you could never do including into funding and pilots with corporates.