Sahaprom in his prime would take it comfortably. Montiel scored his best ever win recently against Hasegawa, but he's an aging fighter at Bantam and one i've never been a big fan of.
Think he's a little stiff myself, but a killer left hook. Just watching a couple of Veeraphols fights against Nishioka. Pleasure to watch two such skilled pro's at work.
Sahaprom was an excellent fighter no doubt. get the feeling though that a world class fighter with good movement would give him problems. Someone who would come at him in an agressive straightforward manor would be playing into his hands. Like Nishioka in their third fight. Or Jochiro.