mike_aa said:In my opinion, this is no king. I really don't see any reason to get excited. I use an RTS400 and it works fine without ever needing another handle for it. Also, I don't want to have to empty an auxiliary filter every 15 minutes of sanding so I will stick with my Festool which works just fine with excellent dust collection and easily coordinates with all my other Festool sanders. When a cordless version with excellent dust collection is available, I might get interested.
When working above your head the extra support and control the filter gives acting as a handle is very nice. Also, I always hook a sander up to a vacuum cleaner whenever I can but there are times when it's not practical and in those cases having a good filter is indispensable. Instead of cleaning the filter every 15 minutes, I cleaned it after half an hour (with an air gun) which seems to work just fine. I didn't see loads of dust floating in the air.