I just got another MTH PS3 engine. I now have several. I got one sd45 B&P from Marty F here on the forum. I just got another BN SD45 from Sal R here on the forum also. If I responded under the For Sale topic everyone would have griped about bumping. So I'll say thanks here for the great deals!
The new SD45s run great. The smoke volume goes up with the engine revs. The interior lights cut out and the headlights get brighter under PS3. I'm very pleased. I read a post of griping the other day on PS3 and believe it's just a bad one. I too have a couple of engines that just don't perform so I understand. I usually go about fixing them myself. I've even tried to share some of the fixes under the DCS column.
I would also like to say thanks to the others that I just bought from here on the forum as well. I got several good pieces and great service. I got a Z4000 transformer (trains R fun) and some Amtrak pieces for the grandkids.