Home Depot offers the Porter-Cable 6" Variable-Speed Polisher, model no. 7424XP, for $117.99. In-cart, that falls to $92.99. With free shipping, that's $6 under our May mention and the lowest total price we've seen. (It's a current price low by $5.) It accepts 5/16" to 24" spindles and features a variable-speed dial, counter balance, and 2-position handle.