Spectrapure is the best name in the industry with 30 years experience in the same Arizona city. They are the only vendor to specially treat every RO membrane they sell to improve its performance and then to test them, either in batches or individually then offer a performance guarantee. They are one of few to use only absolute or near absolute sediment filters and carbon blocks which do a much better job of protecting the RO membrane so it lasts longer and works better and most importantly to custom blend all their own DI resins in house based on thousands of hours of real world beta testing all over the world. They also use only the much better capillary tube flow restrictors and most of their systems come with inline pressure gauges. They don't come any better at any price.

While your existing system may visibly look the same I will bet a dollar to a donut there are big differences you probably don't see or are not aware of.

You only need a 1/4" tee to hook the drinking wate rkit to the icemaker. I have my RO hooked to a laundry sink RO faucet, kitchen sink RO faucet and refrigerator icemaker and door faucet.