Well, we all expect to hear different opinions. With what I know of technology, my primary interest is offering to others what I use and would buy, and then standing behind my offering. It's the Golden Rule.
Digital phone systems are many times like reliable old dogs that people are used to, and so love. However, as technology advances, other options that are easier to manage, offer more options, and that cost less become available. Think of how, in 1996, cell phones with a contract used to cost hundreds of dollars. But now, we can walk out of Costco with an amazing smartphone for free (I did).
NHT serves those customers who are interested in what modern technologies have to offer. The circa 2000 stuff is not what we sell, but we are happy to support it.