Reply to "How to emulate a "Starter" track with Lionchief Plus?"

With the LEDs either transformer choice will work for you.  Something to consider, however, is that the 36 Watt and 72 Watt wall packs for LionChief/+ output DC current.  Lionchief/+ will run on DC or on AC, but any other lionel O gauge engine will require AC, so if you think you may EVER want to purchase any non-LionChief engines, I would save the hassle and start with an AC transformer now.  

_{(Disclaimer, because otherwise someone will complain about it:   Yes, all transformers are AC, it's just simpler to refer to both DC power supplies ( which contain a transformer) and transformers as the same thing, and most people understand that well enough.)}

JGL