Alex said:Like I said about your test, you take one particular vac (an autoclean no less) and use it for one particular situation and then somehow extrapolate that to all Festool vacs. That's not how it works. I am talking about 4 different vacs over a 10 year period, working with them on an almost daily basis in every conceivable situation and they've had to handle almost any type of dust and debris out there. I know a lot better what these vacs can do then those test boys. And I am disappointed. I really like the features and form factor of the Festool vacs, but they just fall behind in suction.
Not all Festool vacs, just the CT series, since they all use the same motor and operating mechanism design and the only real differences are the size of the container and the presence or absence of the autoclean feature. (The shootout I linked doesn't specify whether or not they used AC in their clogged-filter test, but since a number of the vacs have the feature, I would assume they probably did.)
The CT 15, SYS, Mini and Midi all use different internals than the main CT series and I wouldn't expect performance characteristics to generalize between them.
The main reason I don't weight personal experience very highly when making pronouncements about the capabilities of tools is that it's too heavily confounded by other variables. The way you personally handle the vacuum, how often you change bags and filters, what grade of filter you equip it with, the kinds of material you use it on, the hoses you use; all of this has a very substantial impact on performance. I completely believe you that the Festool vacuums have performed poorly for you given the way you've used them. But if I may borrow your own criticism, you can't extrapolate that to everyone else in the world. And so I tend to go by objective measurements that have done their best to control for personal differences in usage when evaluating what a tool can do.