The "to polish..." thread brought up a question for me that really didn't get answered, so I thought maybe I'd ask it here in the form of a poll. How many modelers use brass rails, or know someone who does? And for those that do, are they any more of a maintanence issue than N/S? Does anyone regret that descision? I have a quantity of brass flex track and sections that came with a bunch of stuff I bought at a thrift store, and have been hesitant to use it, thinking that I'd be better off with keeping all nickel-silver and just scrapping the brass.