1% Cap Rate or Cash on Cash?

[John Peter]

What metric do you prefer when first analyzing a property? 1%, cap rate, cash on cash, etc. What do you think is the most useful? I'm looking at 2 fam in Tampa as my first investment in my new area.. probably will hold for 5-10 years. Not one of them comes close to the 1% rule unless the price comes down 50k+.. but some of the other metrics make a bit more sense when you tweak them only a little. 

Also, what's your go to number for cash flow per door? Some say $200 I'd their number, others won't even bother unless it's over $500.