i've used lots of the cases and like them for the money, as someone else said, easy to build in, good quality and look nice and 'different'. the kolink illuminosity is a nice looking case too.
i have also used there PSU's in budget non gaming builds and they have been fine and without issue. i always use bronze rated psu's for what its worth and it would seem all budget psu's are ok, crap or terrible. these seem ok and on ocuk thread, they have the lowest RMA of most of there brands.
i cannot say they are magic as i haven't tested them with professional equipment but for budget non gaming builds they are fine.
i'd definitely use the cases again thats for sure.