Also Festool can be real picky about what accessories you use with their tools. Example - someone was using one of those smaller dust deputies and it fried the circuitry in the vac. Festool denied the warranty claim.
That's one that is not exactly unreasonable. Not sure that I would accept such an argument in a court, but it at least has legs, arguably amounting to an "aftermarket modification."
Another example - guy was using one of their jigsaws to cut a board. He hit a screw which basically trashed the jigsaw (these things are cheap) Festool denied the warranty because he had indicated he was not using a Festool blade....
Absolutely unreasonable. The law (in the USA) is that warranty claims CAN NOT be denied solely due to
the use of non-manufacturer supplied consumables and REPLACEMENT parts. This is best known in the realm of automotive warranties. For example, Ford CAN NOT deny a warranty claim because the owner of the car used Castrol oil instead of Motorcraft. All that matters is whether or not the consumable or part meets the technical specifications, not whether or not it is made by the manufacturer. Is it worth going after Festool on this? Unlikely from a monetary standpoint, but if one gets riled up enough....
Lastly - what a joke. Festool just had their annual across the board price increase and now the put their vac's on sale a month later - who are they trying to kid?
The 15% off puts the price of the vacs below what it was if you bought one in a bundle before the price increase.
Full Disclosure: no, I don't have a garage full of Festool. While it's true that I got two new Festool products when their Road Tour visited here a couple weeks ago, I'm not really sure that a can coozie and micro-systainer (the one's gift cards come in) count as "drinking the green kool-aid." Those two, a Festool hat, and a Carvex jigsaw make up the entire complement of Festool in my shop. In contrast, I have 5 Bosch 12v tools, a Bosch 7" grinder, and a Bosch 5"/6" ROS, all topped off with a Bosch doo-rag.
With the exception of the Domino, you can find a more expensive and many less expensive tool options from other makers. Whether or not the value proposition makes sense is up to the individual buyer. The sense I get is that Festool's are engineered and built much like the Panzerkampfwagen V, aka Panther tank of World War Two, i.e. in typical German fashion. What that means is they work very well, but are a little more complex, lot more expensive, and not as reliable as their main competitors. Unless I were in the grips of "matchy matchy-itis", I wouldn't spend the money on their cordless drills. They aren't bad drills, they simply don't provide the value for the money. I'm on the fence on their vac, the other contender is the Bosch. On the fence on their track saw, other contender is the DeWalt. Festool's cord system is DA BOMB, every maker should adopt it. (For those who don't know, it's basically the same type of system used in computers now. The power cord plugs into the tool, so when you booger up the cord, you can simply unplug it and plug in another. It makes cord storage easier, etc. Of course, you do have the risk of losing the cord.... IIRC, Milwaukee has done something similar with some of their Sawzalls, probably because of a high cord slicing rates with the tool)