The good thing about the Festool DE is they all have the same motor specs!! The rest is all capacity. Stating you have no capacity issue, you could even buy a mini!! I have a mini that i use on the site, and a 36 for the shop. I notice no difference in collection abilities between the 2, except i use a larger hose in the shop and get better collection on the kapex in shop. I even use it WITHOUT chip collection on my thickness planer with the ( i think it's called_) long life bag, i can open and empty and put right back. The biggest difference you're going to notice is how fine the finish is when sanding! Turn the suction down to ~15% and see how fantastic the sanding is!! Not to mention how much LESS sanding you'll need to do to get to this new awesome level of smoothness. Also, like the previous poster, there's really very little worry in the purchase because if you don't like it; send it back!!