Sorry, I don't have any experience with Downsview. I suggest you ask your KD or friends/colleagues for names of local cabinet makers - they may not be as expensive, and a good cabinet maker will build whatever look you want. I've never worked with a KD before, but it seems to me that they shouldn't limit your choices. Good luck.

if you are getting European style cabs I'd get Brookhaven and a lot depends on the install . I would suspect that Mouser is newer to frameless. I think Brookhaven has had this in their offering for a time now. European cabinets are much, much newer for the Us market and they are not the easiest cabinet to get "right". It will be a great cabinet for you...these are both good brands. I would just lean toward the line that has been doing them....make sure of your install team and process for call backs or adjusting things. You need perfection[almost] in making and installing wonderful frameless kitchens...and with your two options being considered you are going high end. But do check the portfolio and so forth of Mouser rolling out their frameless.....information is priceless in kitchen planning.

If a factory finish is on the cabinets there should be no bubbling or peeling unless they are exposed to abnormal amounts of heat which should have been addressed when the kitchen was designed.As for that maker I have no experience with them but you can certainly read the warranty and its exclusions to help with that.

Install DOES correlate with cabinet cost and design difficulty. And 8K is on the LOW, for what you’re doing with 100K cabinets. You should expect 20-30% of the cost of the cabinets as an install price, as a start, for someone that knows what they are doing. Installing inset with scribed furniture toes is the hardest type of cabinet install that exists. And it goes up from there if the house is wonky and the design is complex. No $900 rta box slingers need apply. Its very high skills, labor intensive, high compensation, job.