Just got my Venova for a birthday present last night. I've been sticking with their resin reed, just to keep with the concept of a cheap, bullet-proof, fun little instrument that you can quickly whip out and play.
I spent some time last night playing with a tuner and I agree, there are several notes that require compensation. The upside is that the resin reed seems pretty happy to bend notes. I'm also working on getting comfortable jumping between the different registers and consistently hitting the low C.
For me, it feels like wind players are getting something akin to a Ukulele for guitar players. A very portable, not too serious, fun noise maker. Not so say that there aren't any serious Ukulele players, but generally is a plaything for most folks. I think with that as a starting point, it's pretty fun.