Looking for input on financing future deals

[Terry Dunn]

So my story is that I spent my life in construction work. Built a few houses. It wasn't till the last housing melt down that I decided to look into buying and flipping as well as rentals. I ended up with two rental homes that I have now had for 7 years or so. I have the same tenants that I started with. I guess I'm one of these Dave Ramsey guys, that is having no debt, so I paid off the houses early and now own free and clear. Now after finding this site, I would like to get a couple more rentals. SO the age old question, where is a better place to be, owning free and clear or mortgaged to the hilt. Perhaps get a loan on my existing houses? 

I bought the one house for $33,000.00 and put $12k into it (new kitchen, baths) and it has a current market value of $155,000.00 so I have lots of equity. Just would like the thoughts of experienced investors. I LOVE THIS SITE