I was brought up around turbopowers! 1,2 and I have a 3!
The permabag was a bit naff. Ok of you brushed out and washed it regularly, which was a messy job. If not the fine dust that stayed stuck to the box when you emptied it chocked te suction.My Aunty had the green turbo 1000. She had it many years, which was rare as she is REALLY heavy handed. But that machine was a workhorse. I remember telling her that you could use bags in the machine and her going straight out to pick some up.
I love the noise the noise and smell of these machines. I try not I collect vacuums, but struggle to part with my turbo 3. (which had a permabag when I recieved it, but that went straight in the bin)
I always really liked the look of the grey/orange machine (I can never find one)