I am, of course, willing to pay a reasonable fee for the service as long as it's consistently reliable in terms of having accurate, current phone numbers for the owners.Any insight is greatly appreciated.

That time has passed and at this point, basic cash-flow and returns are no longer reasonable for small scale investors.I will not deny the ability of others to find the occasional diamonds, but you cannot consistently invest in that area with success here.

We really need to put together our strategy and stay consistent with it.  

I haven't really looked into it in-depth as I am a cash-flow guy, and I can't find a consistent way to do so in Seattle.In my opinion, unless you have a pressing reason for making a buy-hold purchase in South Beacon Hill, I would look further south.

You need good systems and a good process that you execute on consistently.

Can anyone suggest any locations they feel will draw consistent tenants and the pricing of the home is decent?

Assuming that you know that you need to do your own number crunching to make sure that your current home will rent in such a way as to provide consistent monthly positive cash flow then you need to consider the following two possible scenarios:1)If you finance as a business you will need 25% down in many cases and you will typically only be able to amortize the loan over 25 years (with a 5 year fixed rate)  At the end of five years the bank will reevaluate their investment in your business and determine whether to renew your loan and at what terms.  

As a example  mulyi unit will produce higher more consistent returns than a SFH. 

If you are wanting to go the direct mailing route, you'll need to plan on sending consistently.

That being said, I do agree with @Thomas Franklin on consistently being sold something.