Dr. Farr, my ascendant is in a late degree of Virgo, so I am stuck with it, either way. Sidereal does put Saturn conjunct my ascendant, which--though I hate to admit it--seems more like me personality-wise; but since Saturn also opposes my sun, it is hard to make a strong case for sidereal as a better ascendant. On the other hand, even though sidereal (or constellational) appeals more to my sense of astro-logic, sidereal shifts most of my planets into water and earth signs. I am now past my 2nd Saturn return (!) and it is fair to say that I have lived my life mostly in the realms of air and fire (=excitement of ideas.)
ByJove, your comment reminds me of a super book: Jodie Forrest, The Ascendant. She suggests a lot of particular comments that other people make about us (notably one's "significant other") to which we should pay attention about how well we are navigating our rising sign. This approach really brings in the DC, as well. Some of her comments are so spot-on, that I would suggest anyone who doesn't know his ascendant could look at his GF's criticisms of him to nail it down. For example, with Virgo rising and Pisces on my DC, no wonder that I sometimes find my husband insufficiently inattentive to detail, and he finds me too picky! Sigh. It is what it is.
This book is written for the tropical zodiac Dr. Farr--I don't know whether it would still apply in sidereal--or constellational.