Hi! I own 2 Piko locomotives. A 0-6-0 Santa Fe switcher, and a 0-6-0 Camelback. They are both of good quality,have full sound,DCC,and smoke. They compare well with LGB,although I think that the Piko's could use a little more detail in certain areas.
Here's a video of my Piko Camelback running with my Bachmann On30 4-6-0 that I made yesterday:
And here's a video of my Piko Santa Fe #728 switcher:
And here's a video of the Camelback being tested on my desktop:
Piko sound systems are made by Soundtraxx. The sound is excellent. They work on either DCC,or analog. They need a power supply of at least 3 amps to operate properly.
I bought a Bridgewerks Mini Mag 3-s,3 amp power supply,as the 1 amp transformer that I was using didn't have enough amp output to power the sound system,and smoke units properly. The flashing headlight in the video showing the Santa Fe switcher was caused by this problem.
Overall, I would recommend Piko products, as they are of very good quality,and not as expensive as a new LGB Mogul with a similar sound system would cost. Their rolling stock,and trackage,while expensive, is beautiful, and I highly recommend them.
Another thing is that Piko,unlike LGB,has a service center located right here in the U.S.
It is in San Diego,Ca,and their tech people are available to answer your questions via email,or you can call,and talk directly, to them.Dan and Jonathan are really great,and I have had the pleasure of talking to them several times.
LGB does not offer this level of service.
All Piko products carry a 1 year warranty.