Thanks Willie for the info, I'll look at those topics and go from there.Zack - You're about to get a lot of different opinions here and that's what they are, opinions. Here are a few of my observations. Code 100 is more forgiving to rolling stock due to it's height, code 83 and 70 are more prototypical. The difference between code 100 and code 83 is .017", not much to the untrained eye. Code 100 from any manufacturer tends to be less expensive than the smaller sizes. Some manufacturers have better tie and spike details than others, as well as within manufacturers offerings. For example, Atlas code 83 is more detailed than their code 100. Flex track varies from one manufacturer to another, Atlas code 100 for example has one moving rail and one fixed rail, some others have both rails as moving. Some flex track is stiffer than others and does not return to its original shape easily. Micro Engineering is an example of this stiffness. While all code 100 is basically the same in height between manufacturers, there is a slight difference with code 83. Not all manufacturers scale down their ties to match the rails.
I use all Atlas code 100 with the exception of a couple of curved turnouts which they don't make. For me, somewhere between 5% and 10% of their turnouts need some tweaking, most generally in the frog area. I have read that some other manufacturers also have some problems here. The price is right for me as it is the least expensive and with over 1200' of track and 120+ turnouts, I have saved somewhere between $2500 and $3500 to go towards rolling stock.
We have had some recent discussions regarding this:
Here -
http://www.modelrailroadforums.com/...-and-track-brands&highlight=track+differences
and here -
http://www.modelrailroadforums.com/forum/showthread.php?39291-Code-100&highlight=track+differences
Read all responses carefully and then decide which is best for your situation.
Willie
Thanks for the info Selector.Generally, the companies introduced the smaller codes of rail to sell them to 'stickler's-for-detail. While many/most in the hobby are happy with Code 100, including its wide availability, and with simple layouts that aren't very good at depicting real scenes, many in the hobby ARE sticklers, rivet counters, or whatever other name you might wish to use because they actually do want to work at replicating a scene in scale and having it look convincing. Code 100 rail is equivalent to 165 lb/yard rail, a weight of rail that nobody has ever used in railroading except maybe to support a heavy overhead crane in a shop that also had to support 50 or more tons of boiler and firebox, or cylinder saddles, etc. Most Class 1 rail in N. America is in the 130 lb/yd weight, with much of it below 110 lb/yd elsewhere. For those of us who enjoy faithfully replicating a real scene on a railway, Code 100 rail is simply too large, and really stands out in a photograph of a layout scene. With enough of us clamouring for more realistic looking rails, the companies began to import the codes now available.
Code 100 is easier to handle, stands up to rougher handling than the lighter codes, and is both cheaper and more widely available. You never have problems with even the older pizza-cutter flanges bottoming out on spikehead details in Code 100. Many prefer to use it inside tunnels or in and out of hidden staging because it is foolproof when laid well.
To directly answer your original question, the 'best' track is the stuff that meets your needs. What are your needs?
It is not possible to provide easements with sectional track.
I think easements do add to obtaining realistic looking track work.
Allow me for a moment to "play the devils advocate" and say I don't think that is entirely true; back in my N-scale days I used to insert a broad curve section at the beginning of the curve and use sharper radius sectional track for most of the curve and then insert another large radius curve at the end before the straight section. It was a crude method of creating easements using sectional track - so it is possible so if someone is adamant or afraid to use flex track, it's worth considering.