We are constructing a new residential building in the town. Most of the construction work is almost done except for some few details. The elevator system in the building is yet to be installed. The owner has demanded the elevator system to the best. He often has heard about complaints related to the elevator system and has even experienced it too. I need suggestions regarding the type of elevators that we can install. We are looking for elevator service companies that provide non-proprietary equipment because we have heard proprietary equipment are hard to get. Are they hard to get, or are they too expensive? Please do provide suggestions on the type of elevators that we can install. Thank you for your feedback.