I just wanted to add a couple of things about Flobeds, based upon my experience. I tried one of their VZone mattresses a little over a year ago, and ultimately I did send it back. The return had nothing to do with the quality of their product, but as Phoenix mentioned, it's such an individual process, and while you should take into consideration everything people tell you about their experiences, I've found that in the end, you're just going to have to try it yourself to really know if it will work for you.
I ended up with a very strange configuration by the end of my trial period, which included moving the Vzone down a layer, and flipping the convoluted topper upside down. I personally did not like the Vzone layer right at the the top because I was too sensitive to the differences in firmness, and when I moved around at night, I was always aware of whether I'd strayed too far from where a specific body area was supposed to be. That said, once I'd moved the Vzone down one or two layers (I think by the end, I had a bottom extra firm layer, then the medium Vzone, then perhaps the upside down convoluted layer, and then a firm layer on top), it worked out fairly well. So maybe the Vzone was still useful, but worked better for me as a lower layer. Still, I personally prefer to have the same firmness throughout, so I did consider switching to the Deluxe.
With respect to the convoluted layer, I touched on this earlier, but I found it too soft, and ended up moving it and flipping it. Keep in mind that I had gone from an extra-firm innerspring mattress to latex, so I was used to a certain feel to a mattress, and felt as though the Flobeds mattress was too "mushy," for lack of a better term. I'm sure that part of that impression was that I was simply going through an adjustment period, and I might have felt that way about any non-innerspring mattress for a certain period of time until I got used to the feel of latex.
What I discovered after a couple of months of rotating and swapping layers, emailing Dewey for advice, emailing Phoenix, and visiting more mattress stores than I ever thought possible, is that I have a personal preference for dunlop, rather than talalay latex. If you haven't tried both, it's hard to explain the difference, and I don't believe that one is better than the other, just different. To me, even the "soft" dunlop is firmer than talalay, and dunlop mattress came closer to my experience on an innerspring mattress than the all-talalay ones did. I ended up spending far more money than I had planned to on a different latex brand, but I'm very happy with the end result.
In closing, I will say that you can't go wrong with Flobeds. Had they offered a dunlop option, I probably would have stayed with them. They are honest, helpful and patient, and they stand by their product. I had no issues with returning the mattress or with receiving a refund. It truly is a risk-free experience with Flobeds, and you very well could end up loving either the Vzone or the Deluxe. Is it a substantial investment? Yes, but someone once mentioned that people think nothing of buying a $20-30k car that they drive for 30 minutes a day, but will hesitate on spending $2-3k for a mattress that they spend 6-8 hours per day on. I completely agree that once you find the mattress/combination that works for you, it is completely worth the investment.
Best of luck with your mattress search, and I hope a good night's sleep is coming your way soon!