Aside from the WW flight school recommendation, consider that DVT is one of the busiest G/A airports in the country. You must factor in the traffic volume and the hobbs time may be “ticking away” dollars as you wait in line for takeoff and #8 in the pattern for landing.

Regarding OP’s concerns about the bad experince at Fly Goodyear- Have you shared those with the Owner, Chief Instructor, or DPE on staff? It is unfortunate that you had a bad experince there, and that should be corrected immediately so it does not happen in the future.