In 2009, I had a Sun Mountain, with which I was quite happy. For Christmas, more or less by mistake, I was given a Clicgear. I used it twice, and the Sun Mountain was immediately sold on Craigslist.
I used that Clicgear for 11 years, well over 1000 rounds, and untold miles. I finally replaced it last year because the wheel bearing had worn out; I liked the newer models well enough to pony up for a new one instead of spending $75 for a new wheel kit.
Clicgear engineering is just superb, the durability is absurd, and they fold up into a 24" cube. It's the best on the market, and whatever is second is a very distant second.