I'd say its heritage is more Nexus, and I'm not sure about how well the Duetto would stay in without a harness.

It's hard to argue with the Tango - it's a great dildo, and the consistency is good (softer than Feeldoe, stiffer then Nexus) - although I do like my Nexus too, especially for positions that aren't a "straight shot"

Something important to note about the share--It's pretty damn big. Unlike the feeldoe, which comes in a few sizes, and is more spherically shaped on the receiving end, the share is bulbous and comes in only one size.

Pros to this are the obvious--once it's in, it feels amazing, hit my g-spot really nicely and stayed put.

Cons are maybe a little less obvious--it can take awhile before my partner or I (we switch it up) are ready to take the receiving end. It's big enough that if you're in a hurry, you can't just slip it in and start humping. We were occasionally frustrated by that.

to clarify, I'm talking about inserting it in any hole, not just anally--I know some folks have had a problem with anal insertion but my partner and I were using it vaginally.