Unless you know somebody who wants to buy it specifically with tubulars, I'd say clinchers. I gave tubulars one more chance on my last vintage build, and rode on Vittoria Rallys for a season. Too many flats, too expensive even for those cheap tires, and I couldn't tell the difference from a good clincher. If somebody GAVE me a Masi with tubulars on it, I'd still think hard about replacing the wheels with clinchers. But I'd ride it first for nostalgia's sake.