mike9 said:
I was looking at the package deals and see the midi and mini are only a $40 difference but when you jump from the midi to the 26e, it's a $100 difference . What vac is sufficient for the ro90 .
All of them are sufficient for the RO90. The only noticable difference between them is size, and therefore bag capacity. If price is your main concern, go for the Mini, it will do the job just as good as the others when you work mainly with sanders. I mostly use the Mini when I'm sanding. You don't need to worry about the vac's storage capacity because with sanding it takes ages to fill up the Mini's 10 L bag.
The Ct26 with its bigger bags comes in handy when you do things that create a lot of chips. Like sawing, planing and routing. I've read about professional people here who can fill 4-5 bags of the 26 per day, so in that case, the bigger the vac, the better. I myself do not come close to such capacities, so I'm generally still fine with the Mini, whatever I do. I also have the 26 and it also works fine with whatever I do. Just a lot bulkier to carry around. I move a lot with my tools so the smaller Mini works better for me, but it's nice to have the 26 as back-up.
mike9 said:
Is getting the vac worth it or will my vacs do the job. I also have the domino so Iam looking at the midi as an option for both tools.
I'd say getting a Festool vac is always worth it. As vacs themselves, they are great. Very high quality and very comfortable to use. The adjustable speed dial is also a very useful feature. I don't think you really need it with the Rotex sanders, I always use the vac on full speed with them, but with some smaller sanders like the DTS400/RTS400/ETS125, being able to turn suction down is a must. If you use those sanders on the vacs' high suction setting they can be sucked into your work piece like a vacuum clamp.
But if you ONLY plan to use a Rotex with the vac, your old non-adjustable Rigid will do just fine. Problem is, once you get used to a Festool sander, they tend to multiply in numbers faster then you'd anticipate. You're treading on a slippery slope, my friend.