Same here!!!!! My top 3 locos I own are 1. Kato NW2, it may be getting on a bit now and had a LOT of running but it still runs flawlessly and silent. 2. Stewart F7A/B (Stewart drive not Kato), again another silent runner thats also one of my best pullers. 3. Proto 2000 GP18 (newest batch), very smooth and controlable with almost silent running. Some locos that are almost as good but not up to those 3 are my Kato GP35, Atlas Master GP38 and a Atlas/Kato RS3. I only own 1 origonal Athearn loco now and that is a SD40-2, it is a very smooth and quiet loco, I do also own several Athearn switchers but they will not be run until they get repowered. I have 3 of the old Atlas/Roco locos (2 SD24's and a GP38), while the bodys need a huge overhaul to bring them up to todays quality the chassis and motor is a smooth and quiet unit, but after being used to Roco continental locos its not really suprising to me. I do have a Bachmann Spetrum 44t, and a Proto 2000 S1, now both of these locos seem to require time to 'warm up' before use, so if I leave them running round my layout for 10 mins or so before I put them into switching service. My Atlas (china) S4 and my Walthers H10-44 are both smooth but somewhat noisey.