One of the things I appreciate about my Mainland mango concert is its ability to have a unique voice in a group. It is brighter than mahogany, but please don't think its tinkly or brittle; the slight emphasis on the treble works great on a concert and probably works even better on a tenor. I find that as you move into larger body sizes like a tenor, the larger box combined with the inherent mellowness of mahogany can make a uke sound more "guitar-y" and less "uke-y." The mango helps impart that ukey quality, IMHO.
BTW, I took my Mainland mango to my acoustic jam session yesterday, which is mostly populated by guitarists. Based on its appearance and its ability to hold its own with 10 guitars going, the other participants (whio admittedly don't know anything about ukes) assumed that it was a high-dollar uke. They were genuinely surprised when I explained that was a very reasonably priced instrument.
Everybody wants something different, but I can tell you as a Mainland mango player for a few years now, I am very happy with my decision.