I ordered the Omni 2 from GGG and I am happier with it than I am with my U360 from Ultimarc. I have a weecade setup and I used the Omni 2 on my second player and my U360 on my first player. While the U360 is an excellent stick I just needed something that didn't have a multi direction use. I found that the Omni worked better for older games that had 2,4 way capabilities while the U360 was far superior for my 8 way or flight stick capabilities. It is all really going to depend on what games you are going to use each product for.
Don't get me wrong. I don't want this to turn into a 'this company makes a superior product while this guy over here makes junk' review. Each company puts out excellent products and like I have said it all depends on your needs. Just take a weekend, write down what games you think you will play the most and go on each website and do some in depth reading. Every website (Ultimarc, Groovy Game Gear, Paradise, etc.) have in depth descriptions and reviews. Whats better, have pictures that go along with their product. I would also recommend going
here for a good amount of product reviews and
here to get a run down of controls for each game. That way you can compile a list of all your games and draw conclusions on what you will need for controllers and you won't be spending $150 for a flight stick controller when all you needed was a good 4 way controller.
And if you still need a good review I would stick to places like this. Any company can tell you they put out a superior product but until it is field tested and has been run through the dirt you won't be able to get a true idea of what each products capabilities are. Good luck.