Dave
You are correct....the Canadian AP series canisters, AP100, AP200, & AP280....did evolve into the E2000 model, introduced in 1982. It was identical in appearance to the 2100, except that it was beige instead of white & had an improved version of the AP series motor that had an increase in waterlift & CFM ratings. However, that motor was a HUGE nightmare for Electrolux as many of them died prematurely & needed replacement. The E2000 also had a Canadian version of the RugSaver PN4 power nozzle, the PN2000....painted beige with a slightly different quick-release neck that accomodated a lower wand with a buttonlock. That wand & quick-release neck were experimental, though....used only on the E2000....and discontinued when the 2100 came out. The 89, AP100, 200, 280 & E2000 models also had a trigger switch on the hose handgrip for the powerhead, & a sliding suction relief on the front of the handgrip. On the 2100, the trigger switch was eliminated & the suction relief was changed to a knob on the back of the handle, same as the American hose handles. Also, the E2000 was the last model to have separate dusting & upholstery tools & a plastic tool caddy....the 2100 introduced the combo dusting/upholstery tool & a shortened crevice tool, as well as the new PN5 power nozzle, which was later replaced with the PN6.
Also, it's important to note that the AP280 was the only Electrolux model ever made worldwide to have a 2 speed motor. I think that alone makes it special

. It's just amazing to me that this same design, starting with the AP100, has been around & still being made since 1973! It's such a simple design that works so well.
Here is a link below to an old Vacuumland thread on the E2000.
Rob
http://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?4068