This is a good value. It doesn't support a larger Garmin network (Radar, multiple screens) but if that isn't in your plans you are good to go.
Also the West 3X points for a 12% West credit is a great deal. And the unit is on sale. Garmin doesn't let the dealers discount their units and this is the only way I have been able to get a "discount". In December I bought a 8642xsv for $4,000 and got $480 back in certificates. Another GreatGrady member bought a GMR18 Fantom on 5X points (20% back) weekend for $2,200 with $440 back.