I think you will find people are partial to certain builders. If I was to decide to build another one I would figure out what style I like, find a REPUTABLE builder close in distance, and then start to look at their past builds. Where are you from maybe people can help you by posting examples of work from close builders.
Jimmy Smith did a good job on my chassis but his style is what I like. You will more than likely be on a "wait list" of some kind no matter who you go with. The sport is blowing up unbelievably big in last couple of years. If you aren't in a hurry make plans to be at the Unlimited Off Road Expo in June I would imagine alot of builders will be there to speak with and get a feel for.
Nothing against Jimmy but if I had another built I would go with Randy's Rock Rods now that I have seen and rode with several of his rigs.