Agree with all thats been said about Chandler Air Services.
The Archers are good workhorses but tatty.
The density altitude is something of a shock to a UK flyer particularly Flagstaff which was at 9750' when I was there last year.
We had to agree to take Chandlers "Mountain flying" training before being let loose on Arizonas beautiful skies, practising at Sedona can scare the cr*p out of you if you get it wrong.
Have fun its well worth it.