I like the advanced license on the SL Inmail.
On the SV you need multiple voicemail to email licenses.
I think NEC is over all doing a good job on the SL as a replacement for the much loved DSX. Our biggest issue has been the audio, primarily on the speakerphones. Version 3.5 simplified programming for those not familiar with the SV and they added the 3rd expansion along with the vm not taking up usable ports.
I'd have liked to have seen a much smaller footprint since a 4 cabinet system will take a fair amout of wall space.
