My favourite thing about homemade shirts - they don't ride up in the front. I think almost every store bought top I have bar some old maternity shirts end up too short in the front. I try the t-shirts on in the shops, and the length is ok. Then I wash them at home, and they are too short! Ottobre's plus size patterns usually have some gathering/ease in the side seam which adds some extra fabric in the bust that combined with me adding a bit of length usually gives me a good result. One day I will have to face up to doing a FBA on a t-shirt pattern, but for now I just keep sewing patterns that provide extra fabric in the front through gathers, pin tucks, etc.
Also the tops I make tend to fit through the shoulders instead of looking like a hanging sack. Unfortunately I don't have any modeled photos, so you have to take my word on it.
Pattern: Farbenmix Fano
Fabric: Hilco Jaimie knit from a couple of winters ago
Pattern: Ottobre 02/07 #4 with #3 sleeves
Fabric: Stenzo rose print knit
Pattern: Ottobre 05/09 #3 - no pockets and shortened
Fabric: Mad Sky daisy knit