We bought one turnkey with higher end finishes, stainless appliances, accent walls, etc. 

I try to put stainless appliances in my rehabs but typically don't buy new - below are the two stores for scratch & dent appliances I've purchased from, but would love recommendations for other stores to explore and that you've had a good experience with! 

Upgraded kitchen and bath with granite and stainless appliances.

We've done upgrades, changed flooring, painted, switched out appliances, changed plumbing fixtures, changed lighting fixtures, and all sorts of things, without requiring the tenants to move.

They want granite countertops, updated bathrooms and stainless steel appliances.

I've got twice the appliances, so how much of an advantage is a duplex versus SFH if you aren't house hacking? 

If it were me in the situation I would look either at the most doors I could get for the buck in a stable market, like a $750,000 16-unit multi-family in my market that is currently c-class (window unit air conditioners, dated stylings, and 10+ year old appliances, etc), extremely well located, and, based on all that, probably a good target for adding value over time and increasing the appraisal value substantially. 

(My first deal by the way)Summary of 1st house - I closed on Mar 23rd, put approx $12000 into it (gutted bathrooms, wood damage and joist), new cabinets and flooring, plus appliances in a little over 3 mons finally Put it up for rent on July 5th and Rented that week and cash flows $300 mo.

I went and walked through it today and all of the garbage and appliances and flooring etc. is pretty self explanatory.

The reason turnkey companies can make good money on this spread is because we have efficient, streamlined rehab processes (same thing for every prop, no surprises), super honed selection criteria for properties, and we get wholesale prices on rehab supplies/fixtures/appliances.