The tenors I've played in the past (like my tenor banjo and the tenor guitar I'm having made) are - and this is purely my personal opinion - played more versatilely in CDGA tuning. Jazz chords sit nicely in this tuning and, because they're in the same tuning ratio as a viola, tenors in this tuning can cope with many fiddle tunes.

Having said that, I tend to put a Shubb capo on the banjo when I want to cope with fiddle tunes in D. Tunes in G fall more easily on the tenor fretboard.