Just trying to save you the anguish of paying money for something that will not do the job.
LGB DC power packs pretty darn expensive for what you get. LGB runs small, low current motors, so a 1 amp supply will run an LGB loco... barely...
Any other loco will exceed this.
So if you want one system running two trains on 2 separate tracks, and they run ok speed (not too fast, not too slow), the G Scale Graphics stuff really is a good choice.
If you don't neeed wireless control:
Custom Vinyl Lettering and Electronics for Garden Railroading
www.gscalegraphics.net
if you do:
Custom Vinyl Lettering and Electronics for Garden Railroading
www.gscalegraphics.net
Hope this helps in getting you the best thing for your $$
Greg