I appreciate the thoughts and input, all good. But I may not have emphasized the right points in my question. It's not that I don't have the time, energy, resources, desire, etc. or that the property is "cool," it's not. And no, I don't want to live there. Hence the rental. My question and the real issue that I'm looking at is the opportunity cost of the money, time, and effort of that house vs another house that might have better cash flow, chance of appreciation, and more $ going to equity each month. There's also the whole cap-ex issue, which is why I mentioned the roof, wall, furnace, and water heater. So, the inquiry is more on the numbers and others experience with this type of situation. Do I cash out the few bucks we can from mortgage pay-down or continue to let this one chug along at a lower rate. Again, if I didn't have the time, energy, resources, or whatever else, I wouldn't have my other rentals or considering trying to trade this one in for a better deal.
And it's also not a matter of sitting on my you know what and getting it ready and rented, its making a decision on hold or sell, which is why i need to make the decision quickly to avoid any unnecessary vacancy. I don't want to accept applications and then tell them I decided to sell the house. I'm fine with my turnaround time as well, life's busy, I'm not watching the grass grow while the house sits empty losing me money.
The "ugh" was because you'll recall that 2006 was not a great time be a buyer, that is how we ended up with a house that was bought at the top of the market with no equity to pull out or offset any loss in a sale, so we broke even and eventually made some money as a rental. If I bought in 2010 with 0%, I suspect I'd be cash flowing much better and wouldn't be asking this. I could be wrong.