Product review (4 stars): Fantastic Range,  Minor Problem, Good Service Experience
Have been extremely pleased with this range, but yes, the brushed stainless steel (or aluminum?) has to be cleaned as advised. Abrasive powders or pads will scratch it. And as reported a few times, the self-cleaning cycle can trip the protective thermostat, shutting off the control panel and locking up the door, requiring a service call, albeit a relatively simple one. We just had this happen a few days past the end of warranty, technically according to the order date, but Samsung immediately agreed to honor the later physical delivery date for the warranty, and had a service person here within two days. We found the entire service process to be polite, cooperative and efficient.

Our technician told us that the thermostat problem is unfortunately common across many current brands and models (check out youtube on this), and is often due to newer models with larger cases being fitted into slots originally cut for smaller cases. While clearance may be within the minimum specs, during self-cleaning, say on a warm day without extra ventilation, the temperature can exceed the thermostat's limit and trip it. On older models, this problem can be a failing ventilation fan, which is another matter, but with the same result.

Anyway, given the price and complexity of this terrific appliance, and this positive first year warranty experience, we're keen on purchasing an extended 5-year service plan, if available. And we'll continue using the self-cleaning cycle, but will pull the unit out from the wall a bit and set a window fan at it and see how that goes, and evaluate widening or ventilating the slot. Do-it-yourself-ers can find videos on youtube showing how to replace the simple and inexpensive thermostat, and might keep one or two on hand if they encounter this problem. Prospective buyers should also check out first whether they live within an in-home Samsung service area, to avoid complications obtaining service support.