My  O gauge LHS sells conversion pins to connect to Real Trax via an MTH adapter track  or so I am told....I would rather stick to MTH but getting to costly..I MUST HAVE  long main line runs capable of 20 to 25 cars  and yards..lots of yards... lots of reasons for the railroad to exist.. (I am spoiled by my HO set up...55 engines..most with DCC and 2 with sound...and 250+ cars..)..so my motto is go big or go away..also my LHS is selling many older stock MTH at 20% off..I can say this now because I have bought most of it...

1drummer;

Have you considered Scaletrax instead of Gargraves or RealTrax?

It is less costly than RealTrax but you will need to ballast it. Also it has a lot less switch options so far (they keep telling me there will be an O-72 Wye) BUT, it has Numbered switches, much more prototypical.

The rails are much closer to scale and are rail shaped as well. I Love it.

See www.toytrainsontracks.com for a good preview (check all the links). Also he sells a couple DVD's showing how to use it.

I have 2 MTH sets and the MTH track that came with them..I have bought numerous pieces and 4 new turnouts, and 6 used..so I am sort of "invested " in real trax..

Scale Trax has caught my eye but I am looking for less expensive..and at my LHS Gargraves with wood ties is the lowest cost..