Thanks Bee -
I just went to HF and picked up a $16 siphon/gun type tho I did look at the unit you show and would have purchased it if they had had one that hadn't been kicked around the store by every one. Hopefully I don't have more than a few corners and crannies to do or will be applying my size 11.5 to my posterior.
I have one of their filter regulators that you show ($20 on sale today) as a pre filter for a Sharpe series 707F unit. The HF regulator unit was restricting the air supply volume so much that I had to remove it - might be repairable, but.... with the new Sharpe unit and a new regulator - probably not.