Below is my experience with RayFine.
Earlier this year, I ordered a 30w MOPA with a JPT M6-L1 source, XY table, mark while engraving board, 3 pair of safety glasses, rotary and 110x110, 200x200 and 300x300 lenses. They sent over an invoice and I paid the initial amount to get the build started. About 2 weeks later I sent the remaining porting of the invoice and was told the laser was going to be shipped. A week or so went by so I inquired about shipment and was told JPT was moving facilities and the M6-L1 source wasn't a stock item. Another week or so went by and they sent notification that the M6-L1 source had arrived and it was going to under go testing. Another week or so went by and I inquired about shipment again. This time I was told my machine was the first fiber that Rayfine had done with the mark while engraving board and they were using my machine to make some tutorial videos that would assist me in using it. Shipping notification finally arrived and the laser was on its way. Once in the country and was held up by FedEx due to weather but upon arrival, I quickly noticed I didn't received my 300x300 lens and my 110x110 was really a 100x100. An email went out to my guy at Rayfine, letting them know a lens was missing and one was wrong.
Next came the setup and the learning process. I got it hooked up and realized something was terribly wrong. The mirrors wouldn't move at all, so I contacted my guy at RayFine and they tried to help trouble shoot the problem but with the major time difference, it was taking days to work through the process. Luckily one of the members on this site was generous enough to help me diagnose the issue and it turned out the cable that controls the mirrors wasn't hooked up inside the tower. After plugging it in, we were off to the races. I still hadn't received a shipping confirmation on the other lens so some more emails went back and forth with the promise that it was going to come but never did.
I then ended up purchasing an automated conveyor setup from them and asked my guy to make sure and put the lens in with that shipment. The conveyor was paid for and once again a few weeks went buy with no shipment notification. I was told it was undergoing testing and not to worry. Finally after a month or so, I told them I needed the conveyor and to send it on. The conveyor showed up and 3 of the leveling feet were busted off during shipping but the 300x300 lens was in there. I asked for some replacement feet but was told those were on there for shipping purposes and I could just remove them.
The conveyor came with absolutely zero and I mean ZERO instructions or paperwork, which made it difficult to get setup properly. There is a control panel with different features but its just letters and numbers. I asked my guy at Rayfine for instruction on multiple occasions but still nothing. After some tinkering and changing setting, I thought we had figured out but then ran into the belt moving issue. (See my post on Stopping a BLDC motor). That has been resolved thanks to some new bearings and a little machining.
All in all, my experience wasn't terrible but it certainly wasn't as easy as my first Universal Laser purchase. Also, you can forget about tech support on these Chinese lasers. If you aren't handy or enjoy tinkering on things, I would stick with something from the US.
Hope this helps.
Universal 60w VLS6.60 w/ rotary
RayFine 30w MOPA
Corel X8, Photoshop
Fab shop with South Bend Heavy 10, Bridgeport 9x42, 185a welder and a multitude of supporting tools/equipment