Why do you think you can trust Speedy 400 more than GWeike lasers?
Sure they are built better but they cost a lot and break too.
From my experience my GCC Spirit GX breaks more often than my Taiwanese laser. Both my lasers are not cheap(almost the same price) and probably are not comparable to Gweike lasers. However the Taiwanese laser costs almost the same because it is two times bigger than the Spirit and it comes with 280W power vs 100W in Spirit. So if I had bought it with the same power and size as my Spirit it would have cost me at least 2-3 times less than Spirit.
If I was you I would consider getting extra 2 Chinese lasers instead of one Speedy 400.
At least you will have not only two spare machines in case one will break but can also increase your production. And even with two extra lasers from China you will have a lot of cash left comparing to Speedy 400
BTW, check sawmillcreek for a fresh topic about a broken motherboard in an Epilog Zing laser. It was not abused by its owner and according to him has very low use. However it has broke just under two years of running it. Now its owner is asked to pay $2500 for a new motherboard.