In my experience the best sound reduction is achieved with ballasted foam underlay. Gauge master/noch make excellent versions in both grey and brown ballast. Followed by woodlands scenics foam and copydex fixed ballast.
Foam or cork with Pva set ballast is in my opinion just about the same as ballasting right into the baseboard from a sound point of view but you do get the elevation and ballast shoulder.
http://www.ebay.ie/itm/Model-Irish-Railways-OO-NIR-Hunslet-DL-Class-Kit-No-102-Falcon-/171203786155?pt=UK_Trains_Railway_Models&hash=item27dc8a75ab
MIR Hunslet
Lol, I won't mention that I used the restart to update NginX, Varnishd and tweak the caching settings then so ;p
Cheers lads
Back to the layout I should go!!
Google says the following:
The final shot is from Bevan Price. Taken at Tuam in Ireland his pic shows locomotives B170 and B175 on a CIE (Córas Iompair Éireann) service at Tuam. Bevan's pic was taken on 12th June 1977. CIE is responsible for the majority of public transport in Ireland.