I've got the HF single speed (67256) and was thinking of buying the Task Force model from Lowes. The HF model is great and mostly meets my needs, but the blades wear out very quickly and I'd like to have a variable speed option which makes the Task Force model very appealing. It says on the box that it is compatible with Fein, Rockwell, Craftsman and with adapter, Dremel. Does anyone have any experience with it? If so, please share. According to the latest flyer, Craftsman Club members get 25% off multitool attachments so if I could use them, I'd pay less than I would for HF blades.