Hello John,
From your research on the forum, you will have established that the Winklebrig is a robust, well designed little vessel, with few faults.
As WB93 & 103 are later models, they will benefit from a 2" higher coach roof than earlier ones, also should have externally removable, composite bilge boards and a lighter plywood rudder, both desirable features.
Components used at build, including wooden bulwarks, are of good quality, easily removed for renovation if necessary.
In general, maintenance on a Winklebrig is pleasurable and need not be expensive.
Of the two mainsail options, having used both, I prefer the High Peaked Gaff but as you say, others equally favour a Low Peaked Gaff and Topsail.
Indespension trailers are well made and replacement/upgrade parts readily available.
I wouldn't be too worried about a cloudy hull. Mine, of the same vintage, spends at least 6 months each year on the water and gets its fair share of dings, yet on retrieval, four hours work with T-Cut, restores it to near new appearance.
At the competitive price asked, both boats are well worth a visit.
If I can be of any help, give a call at Tel: 01229 585368.
As Martin says, you won't regret being the Owner of a Winklebrig.
Regards: David