I using a setting of Amazon, Fitness, and Bodybuilder set to 1.0 but I don't like how the breasts look, and when I use the breastup morphs set to one, I get a nasty line in the top of breasts that I have to photoshop out. I'm trying to make breasts that don't sag and are nice and round, but I can't get the morphs to work the way I want them to. also the width of each breast isn't wide enough, even with BrstDiameter. Can anyone using V4.1 give me some suggestions? thanks.

I think I know exactly which line you are talking about.  I don't care for the Amazon and Fitness morphs much because I think they make alot of things look weird.  I would also try these morphs.  The first one is just some more muscle morphs, while the second one is a set of magnets to help with clothes fitting.

http://www.daz3d.com/i.x/shop/itemdetails/-/?item=3940&spmeta=rq
http://www.daz3d.com/i.x/shop/itemdetails/-/?item=5474&cat=350

These will allow you to get V4.1 much larger than you could w/out them and you won't need to use the Amazon morph at all, and the Fitness morph will get used sparingly.  Unfortunatly you will still have to play around with the dials to figure out that line across the breasts problem, but these should/could help a little.

actually I don't want them drooping or hanging, I want them firm and tight, even if its unrealistic.