Bill Thompson makes a excellent drywasher as I own 4 of his puffers (and 2 of the Keene machines). The only reason I have the Keene 12v puffer is because I picked it up used cheap. With Bill, you always get straight talk as his word is firm as iron and you can count on that. Now for Keene, they make great prospecting equipment BUT are often back ordered for different reasons that they don't (in my experience) always fess up too. One more thing to consider is the price of some fabricated metal products in the US may go up some until these trade issues are worked out. President Trump is calling China out on this unfair trade bs they've been sticking it too us for way too long. By dumping cheap metal into our economy, our own base metal mines and smelters were forced to gradually shut down over the past 20 or so years. Can no longer even extract lead ore from the ground and smelt to create a simple car battery......now were vulnerable. Not knowing how long this may take to shake out, many companies have been "hoarding" aluminum and such causing the price to go up some and worry about supply. I wouldn't wait too long to order that Thompson just in case.