Thanks for the comments. I think I'll order at least 2 of the four that I listed. To the questions that have been asked: (1) Shape of tail: IMO, Jantzen's normal shirt tail is pretty shallow. It indeed has a rounded shape as all dress shirts do, but it is not "super-rounded" such that the sides are, for example, 27" from the collar when the back is 31". This is one of the reasons I think they could make great casual untucked shirts -- you can get the back shorter without worrying that the sides will be too short. Compared to say Borrelli, the shallowness of the Jantzen tail makes it much more suitable for untucked wear. (2) Jantzen's armholes are definitely higher than most RTWs, but it also depends on the cut. In my experience, the tighter the cut of the shirt, the higher the armhole (i.e. the form fit will have a higher armhole than the medium fit). You could always just ask to cut higher armholes in the comments, but personally I think any extraneous comments are a risky proposition with Jantzen (I'm probably just being crazy, but that's just how I feel). If you'd like a medium fit but want higher armholes, a good way to go might just be to add 2 to 3 inches to your measurements and opt for the form fit. (3) Hip measurement: Make sure to be careful with your hip measurement when going for a shirt that will be left untucked. Most of us have no clue how to take a good hip measurement. HINT: Your hip measurement should be about equal to your chest, unless you are really brawny up top. I have small hips, and mine are still 38". If you screw up your hip measurement, the shirt will be super tight at the bottom and will look stupid untucked. If you go with form fit, I'd make sure to add at least 2" to your hip measurement if you are going to go with the untucked look. Better to miss on the higher side with the hip measurement, IMO. (4) New measurements, and the order form: I specify myself as a repeat customer, but then I just go ahead and fill in everything anew. I leave the "same xxx" totally blank (i.e. I don't change it from the default, which I believe is "for repeat customer only").