I use the old faithfull handcrank keene, it will set for a year or two out side collecting dust and will always start first crank, i dont buff out to many big piles, mostly i use for sniping.
It will handle throwing rocks the size of softballs all day, day in day out and have very little in the way of breakdowns worse thing that could happen stick finger through the riffle cloth, dob of silicone or piece of masking tape will fix.
I am currently trying to destroy my second one, the first just needs a rebuild ready for another 20 years, the newer model is better built with heavier wear parts, my old one black ABS type, we had to carry extra rod bolts they were small diameter and broke fast. other than that it still a good machine.
I own the 151, its more trouble than its worth, always breaking wear parts, its good for big placer runs where your getting pay, i dont like it just to much to carry and it needs assemble at each site, just a lot to do, more parts to loose. it is a good machine just carry a tool kit, Miner Approved.
The small hand crank you can leave assembled from day one, fits in most front seats, can be carried by one person, and is ready to go the minute you get to the site.
no vibrating parts to loose, is easy to chk riffle tray just lift the hopper all the way get your straw light puff the gold will be right on one the top 3 riffles.
Miner Approved.
The rest of the brands i no nothing about so theres my take on drywashers.
Now go find the good grounds get those little suckers working.
GT...........
