Hi Apey,
I've been paddling an MS2 for just over a year now and cant fault it to be honest. I've got a split shaft and love the flow locking mechanism (similar to the epic one but throws 90 degree opposite)....
I'm built like a racing sardine and dont have the strength to push a big set of blades for any decent length. Previous to this I paddled a Legend Hydra, which is considered a small teardrop shaped blade. Loved these blades, and once you got used to them being a bit twitchy if you go lazy with your stroke it was brilliant for me.
The flow MS2 is a much more predictable blade, the entry and exit of the blade feels cleaner and easier, and you can be a lot more relaxed/lazy with your stroke without getting caught out and having the blade dive under the hull, like my hydra could do. Its definetly a little bit bigger blade than the hydra and I found myself setting the split shaft 2cm shorter than what i used to paddle to still get the same faster cadence that I prefer to paddle at.
Im really hard on gear, Im not going out to mollycoddle things when Im training or racing and so far the MS2 hasnt shown any signs of problems, so must be pretty reliable.....
Resale is a little hard to know, they are pretty common here in the local paddling community as they are made locally. But might be a bit different elsewhere where they are new to the market.
There is an MS1 now floating around so Im trying to get hold of it off Rich to give that a test paddle at some stage too....
Hope that helps....