Just an updated SDS 100 on steroids with the updated / upgraded peripherals and software. I don't have one but hearing same great performance as the SDS 100 for digital Phase 2 systems.
The problem I have with the SDS 100 is the desense as you drive within a 1/4 mile of a cell site. The dropouts or garble is terrible which makes monitoring tricky as you drive down the highway past loads of cell sites. Would be nice if the 150 was improved on this front.