said by TSI Andre:
At this time, there is a restriction on the Sagemcom when purchasing either the 15/10, 25/10 or 50/10 package where the modem must come from a IISP. This is a restriction currently imposed by the incumbent.
I'm sure that requirement will be lifted someday, and when it does you can expect another mass-migration wave to VSDL - me included. If the Sagemcom was actually a better modem, I'd have jumped by now.