For me winner is Catapult is winner.

"Catapult will be the entire architecture re-worked and migrated from Java to C++ to aid in increasing performance and will be switching from the HTTP protocol to socket communication which will help reduce latency and improve bi-directional communication. It is a high-performance product that can handle high transaction throughputs, such as 4 digits per second, even on a geographically dispersed network. "
http://blog.nem.io/relationship-between-nem-mijin-catapult-u/

All looks interesting.
Wallet is wallet some have chat inside some other bullshit but at end noone realy cares.Wallet should look good and be easy to use for noobs.
cryptoapex as exchange it have to trade some unique goods like NXT nem tokens at beggining it drives volume up and new users we will see
all of those projects are far from months rather to years to arrive from now.
But if you look at poloniex and their trading volume it took them few years to be top traded exchange on market but its still possible cryto is very young now.
Only 0,1% of people have ever used it.