Hi, I'm looking to book a car for May at LAS as a Mid-Size SUV group F or Large G, does anyone know what's available there and what are the best vehicles in those classes?

Also is Avis run as Budget in the US?

Would i be better going with another company like Alamo? They're slightly more expensive but havent used them in the US, would they have more options on cars etc?

Thanks in advance :-)