Whats wrong with the solid RLBL suits on Ralph Lauren's site? Navy and Charcoal. Personally I've seen charcoal and navy at Saks in BH (though that was over a year ago). Any Saks should be able to them shipped from that store (assuming they still carry solid colors).
As for RLPL, I don't think you get quite the same look. The RLPL I've seen/own (I have two Saville Row) dont have nearly as strong a shoulder (I prefer the soft shoulder). The waste also isn't as suppressed either, though a tailor can certainly correct that.
When I was looking two years ago, another member recommended John Varvatos mainline. Drop is similar, as is the waste supression... though the shoulders are softer. Can't remember now if they were half canvassed or full.