Hi jimlaheytpb.
That's all very exciting! It sounds like you had quite the mattress testing adventure and have narrowed it down to some wonderful options. I look forward to hearing how your call with SleepEZ goes. 
NikkiTMU
While it was quite the adventure it still feels like we have more on our plate than when we were blissfully ignorant and one day away from a bed
In talking we really are struggling to narrow it down from "The list of 4"
SleepEZ Hybrid 360 (pillowtop + coils + flippable)
At ~2000 CAD shipped this is the one I'm leaning towards, the coils worry me a bit in terms of motion transfer but the sleep country bed we were going to buy didn't bother us too too much in this regard, the difference here being latex vs memory foam in terms of topper. This bed offers a zippable pillow top which would provide us the ability to swap out comfort layers while maintaining the integrity of the mattress as a whole. I like the ability to open the cover and swap stuff out if it isn't working.
SleepEZ Roma (latex + pillowtop + customizable + filippable)
At ~1500 CAD shipped this is the biggest 'budget' mattress of the list, it is latex and provides the ability to flip for a more firm or less firm option. It can't be opened, it doesn't offer much other than a solid base for us. It has 1.5" of wool pillowtop on both sides which concerns me should it be too firm and we want to put a topper on, would this affect the feeling? I'm unsure, but I think likely. The biggest plus of this mattress is the price. It has 6" of latex.
SleepEZ Latex (latex + customizable + flippable)
At 9"~2150 - 13"~2700 CAD + Shipping this mattress is quite expensive, the biggest plus here are the customization in terms of comfort, the ability to swap out layers to try and suit the mattress to our needs in our own home really speaks to me in terms of value, but it is almost $1000 above my budget. While budgets are meant to be broken I just don't know if I see the value in having a piece of Latex holding the bulk of me up vs a set of Springs. Perhaps someone here has some more input on the support it would provide. the 13" option would likely be the way to go as the 9" almost brings us to the Roma territory which would likely be the better buy if I started removing inches of latex. My wife asked "why do we need more latex? is there really that big of a difference between 13" and 7"?" honestly, I'm not sure either.
Swiss Dream Bed (latex + wood + wool + customizable)
At ~3000 CAD this is the most expensive mattress with likely the longest wait to sleep in it (1+mo). As I said earlier my wife loves this bed, but I find it quite firm, probably too firm, which would mean another cost in terms of adding more to the comfort layer. I am vary wary of this price point, I see it as "I get 4" of latex, a wool topper and some wood tied together for $3000"; I know there is more to it than that and I know the craftsmanship that goes in to the bed as I am a carpenter myself. I just feel like it isn't enough. I think the idea is fantastic, I think the message is good, but aside from the "no metal bed, all natural, GMO free, etc, etc, etc," (this stuff isn't important to me like it is to others) I just struggle with the price tag. I will say that if this bed was $2000 we would have already purchased it.
I'm really struggling to narrow it down from here and would love to hear more information on Latex in terms of how thick it is. I did real the mattress guide but perhaps I've missed a section or skimmed something too hard.
THE STRUGGLE IS REAL