I have the CTL26, I use it 80% of the time together with my table saw CS70 cutting only pine and the rest of the time with the Carvex jig saw and the Rotex 150 sander. So far I have only changed the dustbag once, but I noticed that no dust at all, absolutely NO dust had penetrated the dustbag. The interior of the CTL and the secondary filter was 100% clean. I find this absolutely impressive!! In comparison to my other vac Metabo ASR2025 I always find some amount of fine dust in the interior and in the secondary filters, so I always apply pressurized air to clean it when I change the dustbag.
If I ever have to replace the secondary filter, which type of filter do you recommend, the standard 1 micron or the 0.3 micron Hepa filter?
Does the 0.3 micron filter come with any downsides, like less airflow or easier clogging?