I use Llagas Creek code 215 aluminum flex track and it can be laid just as HO track is laid. It is very flexible and readily accepts any curve - I spike through the tie ends to prevent twisting. The rail is readily cut with my flush cutting pliers. It is beautiful to look at, beautiful to work with and the lowest price - what more can be asked for (well maybe you would want something heavy and strong enough for an elephant to walk on!).
Regards ... Doug
Regards ... Doug