I really don't think we'd try any new Grandstream products due to our past experiences and Grandstream's inability to make the HT-502 a reliable device even though we worked with them for months. Using their HT-502 model caused us to lose over $150K directly.

The HT-286 is one we tried and it had good luck with and have thought about offering it for resellers to offer. It's a very simple device and has been around for many years so there's not a lot that can go wrong with it.