As Josh mentioned, it's important to find your right fit, I wouldn't focus solely on price especially if you're looking to be very hands off and you're looking for quality. 

Most of the time, quality is sacrificed. 

They must provide quality service, or their clients won't want to pay the price.

https://www.biggerpockets.com/forums/12/topics/1122318-quality-turnkey-companies?

We have done a ton of research about phoenix and it seems like a good area as the unemployment rate is low and population is increasing.

HUD loans will take drastically longer (I've never used one personally), but there can be benefits to using these loans if you're a long-term owner.The interest rates in your Key Considerations seem very low for agency loans and they're definitely low for bridge loans. 

If you plan to keep your current home as a rental, a home equity loan or HELOC could help fund your new home’s remodel while keeping your low mortgage rate.

Quality over quantity for me. 

Maybe with a low (70% or less) LTV or an ARM and stellar credit...also depends on what type of loan you're looking for (nonQM or conventional Fannie/Freddie)

I suspect most who requested cash for keys had previously received cash for keys.What I do instead is explain:- the housing shortage in my market and that an eviction will forever make it difficult to find a quality rental in this market. - I will ding their credit such that all credit cards and other debt will cost them more.- I will keep their security deposit for funds owed.- I will do my best to garnish future wages until their debt to me is paid in full.This has worked 100% time so far.