I've been thinking for a while about the "new" double-ended dildos (Fun Factory Share series, Tantus Feeldoe series, and Vixen Nexus series (listed in alphabetical order by manufacturer). It's difficult to get a head-to-head comparison, in fact the best one I've seen is probably Eden's video blog on them, but even that didn't really say enough for me. Since these are all pretty pricy, it's likely very few people have a sample of each, but I'd like to have some discussion on what we do know all in one place.

This is what I've heard so far:
The Nexus came first, followed by the Feeldoe and lastly the Share.
The Nexus line differs from the others by not being designed as a "strapless strap-on", so you do need a harness to use it.
The Feeldoe has the stiffest silicone, so there's more of a possibility that users may find it uncomfortable in certain positions - but it would be the easiest to insert.
The Share is the softest and you may have problems using it anally.

Some may be true, some may not, but it was hard to find things out because there's very little directly addressing these dildos (the Feeldoe seems to have the most information, followed by the Share and finally the Nexus). The Eden reviews help, but that's still not head-to-head. I'm hoping that this thread can turn into a head-to-head from many people.

My experience so far is only with the Nexus Maximus, and I'll write a bit on that in a separate post (I'm trying to separate the idea from my experiences). As a male, I'm personally interested in pegging, but I'd love for this discussion to address all uses so it can be broadly applicable.