The only advantage with the current Haswell models is that they come with much faster PCIe SSDs
MacMall doesn't stock any SSD-only models. The two closeouts in the 27" size are just 1TB spinning drives.
If I were ordering a new machine, I would not even consider a spinning drive. I've SSD on my laptop, and it's tough to even think about going back.
But at $1349 for a pre-Haswell model, and at a time that I don't want to spend $2000 on a Haswell model having SSD, that's enough of a price difference to cause me to consider the spinning option. I just want to be sure I'm not overlooking some detail due to my lack of knowledge of the product line. Sounds like there's no issue though, and so I just might do it.