bznhafdzn,
I have the 40 lb pressure blaster and the bench-top cabinet. They both are well made and work fine.
If I was buying a pressure blaster now, I would buy the 110 lb tank so a full bag of sand/media could be loaded at one time. Also, some other pressure blaster tanks have a funnel-like top and might be easier to fill (to me they are not worth the extra price, unless they fill faster).
Also, a dead-man nozzle looks like a nice adaptation but it adds to the cost and might not work with the hoses on either of the above tanks.
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=43839 Tim