senior/convertible
ive had both a senior and a convertible.....the senior was 2 speed and i found the hose suction pretty ok when you fitted a brand new dust bag but if you were doing a dirty job like cleaning out the van the pores of the bag soon clogged and the hose suction dropped as it was not an air tight connection...i always wondered why they didnt rectify this by extending the metalwork on the base over toward the pully a bit more to block the gap more once the converter was in place...they went so far with that bit of a lip.....
as for the convertible yes a very good cleaner way ahead of its time brilliant hose suction nice set of tools like the senior ..easy conversion, but as the read up says very unusually heavy and cumbersome i think that was what was its downfall ...would have been great for hotel work with vast halls and areas
