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Mine is the second one you listed, but it doesn't have the digital display. Same machine, though, just a newer model. There are other more expensive brands out there but my HF machine has held up w/o any issues after doing five 13 ft Whalers and a 26ft Grady. Be sure to get a high quality wool pad since that's what does the work along with the 3M product. Keep the machine moving and do a roughly 18 in x 18 in section at a time.