Hi Barry,
Thank You for your the first impression of the sound character of your new nice speakers, especially that You compare them with the old-school models, that for some of us are known, so we can better understand your impressions.
Interestingly that 2311 & 2308 ( or 2312 & 2308 ) has almost the same horizontal polar response as H4365 ( when CD-horn compensated ) with previously mentioned 'over-shoot' from say 3kHz to 9kHz in off-axis response, that is may be why a kind of "...call it presence...." can be recognized.
Unfortunately I can not find any more detailed measurements data about the polar response of the 4365 horn-driver combo.
regards
Ivica