I've owned and played with both Scuf and Cinch. Scuf controllers are good so long as they work. Of the 4 Scufs I owned for the 360, only one lasted more than a year. One only last 3 months - a week beyond warranty - and Scuf refused to honor the warranty and fix it for free. I've also owned two Scufs for the XB1. The first one developed an issue with the right trigger stop within a couple of weeks of use. I managed to fix it myself, but the right thumb stick broke (the click mechanism broke) after 5 months and I now use it for spare parts. I'm currently using the second Scuf and after a month of use it's still working.
My point of mentioning all of this was to demonstrate my experience with the reliability of the Scuf. For me it's been hit or miss.
I've owned one Cinch One. I like the buttons on the back as opposed to the Scuf paddles as I have smaller hands and the buttons are more easily accessible. The Cinch does not have the "hair trigger" mechanism that the Scuf has. It does come with trigger stops but I'm less than impressed with the adjustable trigger stops option. If I were to get another pair I would go with the standard trigger stops. The adjustable stops are not designed well IMO and they allow for too much movement. I also agree that the Cinch is overpriced for what you get.
In terms of build and shipping time, I typically get my Scuf within 2 to 3 weeks of ordering. I live in the U.S. so it may take longer if you live elsewhere. The Cinch took nearly 4 weeks. Too long IMO.
Both companies lack in customer service from my experience in contacting them.
My recommendation would be to save your money and play with the standard controller. If you feel the need to try one of these modified controllers I would suggest not getting the Scuf.