Bit the bullet finally and picked up a late 2013 MBP, 4G RAM, 500GB HD, 10.9. I had been mulling between the i5/i7 upgrade for it but managed to snag a deal to get the unit for just under 900 with the i5. I really wanted to get this unit so I can upgrade the RAM in the future (and the rest of the computer instead of the Retina models) so I'm hoping this was a good choice overall.
Only issue so far is mistakenly pressing the 'get all the iSuite things on the AppStore' and having the App Store constantly tell me I can upgrade to Yosemite and upgrade my Garageband as well.
That and trying to decide if I should get the unit up to 10.9.5 or stay at lovely 10.9.4 for the time being. Other than that, it seems to run fine. Just working to figure out what browser and other things work best up here on Mavericks. (It's really kind of weird jumping up to 10.9 after being on Lion for so long.)