The 4'' is rarer but the 3.5'' is more desirable. I bought my 3.5'' pre-27 about 5yrs ago and have not seen one in real life since......................................M*
Added value, cost more, popular, desirable, cooler, hard to find......what else can be said about the 3.5'' pre-27........maybe in nickel................................M*
And no matter how much we like the Pre 28 HPs, they just don't have the same quality, some would even say elegance.It's something about the quality that was put into the Pre 27's. ... When you handle one, it just feels "quality".