Bachmann Spectrum's 4-6-0 and 2-10-0's: how well do they do on 18" to 20" curves?

[caboose63]

Can anyone tell how wells doe Bachmann Spectrum's 4-6-0 and 2-10-0's operated in 18" to 20" curves? I have 4 x 8 HO scale layout and wondered how well either steam locomotive would look coming around one of the curves on my model railroad or turnouts? with a Russian Decapod 2-10-0 having 14 wheels i was just curious it would be worth my money to get an undecorated 2-10-0 from Walthers while they are on sale for $119. Is there any model railroaders out there that has one of Bachmann's Spectrum 2-10-0 and if so does it look realistic and not out landish coming around an 18" curve. I missed the issue in which the 4-6-0 and 2-10-0 were reviews but are they good pullers and what was amount of freight or passenger cars they would pull?