I think in the $600-$700 price range you can't beat the Juki (or Brother) for an excellent straight-stitch only machine with a generous throat space that will FMQ beautifully! As already mentioned, I haven't heard a negative comment on either of these machines as they seem to perform wonderfully.
I suggest you test drive both to see how they feel to you but I can't imagine you'll be disappointed with either. Before I bought my Juki I had played around on both and they are very, very similar but the Juki is the one that followed me home. Primarily, because I decided to pay a bit more for the TL2200QVP mini that came with several add'l feet.
Good luck and let us know what you decide!