I think you need to choose this entirely based on which brand in your area can support you better. Fronius machines are more affordable than Lincoln, and Fronius equipment becomes lighter. I think both are the same in terms of robustness. Cloos is not a brand I know of. According to Lincoln Fronius, there is more electricity consumption. However, because Lincoln is an older and more experienced company, their resource options are much greater.
Strange, last time I saw a customer buy a Fronius package it was $50k. In my experience Fronius has always been the far more expensive option than any other brand. Not sure where you have your information from, but I know some people out there who would love if Fronius actually were to cost less than Lincoln!
I have equal experience with Fronius and Lincoln. Fronius can be quite finicky. I've just gone through 8 ferris wheel systems and had to return 2 servo torches, 1 hosepack and 1 bad ethernet card/anybus module. Getting the Fronius system connected and functioning was also a pain because of their "over-engineering". Anytime the Fronius welder had an error, the screen displayed "Something went wrong. Contact support". I can't imagine why anyone would want their line down because their welder can't help their maintenance guy troubleshoot, instead "contact support". The integrator we sold those 8 ferris wheel systems to also mentioned their headaches with Fronius equipment, but chose Fronius anyways because of the CMT process. Just my .02c.
As far as Lincoln goes, there is a Lincoln place over there in Shanghai, China. I believe Lincoln will be able to offer you more than just welding support too if you want/need it. They should be able to help with integration and programming. Lincoln has an entire automation division that specializes in turn-key systems.
And lastly, not to get into too many specifics about my upcoming project, but it is a little similar to what you are doing (yzdtc2008) in terms of size and layout. Our customer has chosen to go with a Lincoln Power Supply because of the support that they can get from Lincoln, and also previous experience with them. Lastly, FANUC and Lincoln have quite the partnership going on, so they work very well together. Though I will say FANUC and Fronius work well together too when it comes to connectivity. It's up to you which you choose and as Byrol mentioned, just see which one has the best support for you in your area. I know I will definitely recommend Lincoln, but I may be a little bias, but! I am also talking from experience with both Fronius and Lincoln!
EDit: Also wanted to mention we have a returning customer who originally went with Fronius, but for all future cells (starting with the next batch here) with them are going all Lincoln.