I would like to swap out the original equipment, vintage drop bars on my 1976 Schwinn Super Le Tour 12.2 (Panasonic frame, all Japanese parts originally; modernized to 700c, 10 speed cassette, compact crank, upgraded derailers, etc., etc.). I use the bike for a combination of daily 20-mile fitness rides at a leisurely 11 or 12mph, as a grocery getter with racks/panniers front and back, and for light, multiple-day, long distance touring. I am 50, 5ft 10, weight 155 and can no longer stretch out as flat as in my youth. I have destroyed the beauty of this bike with a very high Nitto Technomic stem with a very short reach, and this allows me to set it up quite comfortably for my aging neck and shoulders. Right now, comfort for both short distance and long distance is most important. I have no interest in maximizing my aero efficiency. I want comfortable bars for long rides and tours. Oh, I ride on some bike paths and rail trails, too, with rougher surfaces (I squeezed a 38mm tire on the back end of the old girl and a 35 up front, so I can take on virtually any surface). Anyhow, I'd like to try rando bars, and need advice on brand and width.
All I can find online are Nitto 132 and 135 rando bars and Velo Orange rando bars. The Velo Orange bars range from 42 to 48cm, in four increments. Without being able to try several bars, what is a rule of thumb for starters? I wear a size 37 suit jacket and wear a 32 shirt sleeve. I don't have long monkey arms or broad he-man shoulders. I'm an average 5ft 10 155 pound man.
Please advise on bar width, and mention if there are other manufacturers of rando bars that I have not come across. Thanks.