Inquiry (采购产品): Model Comparisons I currently have the Lowe's Model 90L650A. After looking at your product line, I have found two other models I am interested in. They are 925-21-10...3HP, 12 gal, 2 stage and 925-29-10...6.5HP, 10 Gal Question 1: Is there any advantage to Stainless Steel vs Poly Tank? Is it just a matter of preference? Question 2: I am looking for the quietest vacuum. Are all three of these (90L650A, 925-21-10, 925-29-10) equally quiet, or is one the quietest? Question 3: What is the advantage/difference between the 2-stage 925-21-10 and the 925-29-10? Thank you, Bob Kolock Rochester, NY **** Hidden Message ***** Robert J. Kolock 380 Bennington Drive Rochester, NY 14616-4721-34 USA Company: bennington graphics, ltd Title: President Phone: 585 865-9195 E-mail: bglwood@frontiernet.net **** Hidden Message ***** bglwood@frontiernet.net