Couple of sugestions:
1. Try the same question on the turning sections of woodnet or sawmill creek.org. You will get a whole lot of replies.
2. I love my PM 3520B, but it is overkill for pens. It handles pens reall good though, but also 120 lb bowl blanks. If I can hold it up to the headstock, it can turn it well.
The only other lathes I 've used at least for several days is some old Deltas and a 2436 Oneway (club lathe.) I actually prefer my PM3520B to the Oneway, but I am baised.
Rich S.