Help me buy a competition suit

Hi everyone: I've browsed through some of the threads on this forum about competition suits and I'm still unsure of what to purchase. Here is my info: I'm female, normally race in a Speedo size 30, and my best events are long distance free (500 and above), 400 IM, and 200 Fly, Back, ***. (Yes, I am waiting for an 800 IM!!!) There seem to be so many different types of suits out there--brands, different lengths, model years, etc. Also confusing me are the announcements that FINA has approved new suits from TYR and Speedo (www.swimmingworldmagazine.com/.../16814.asp). I am looking to have the suit for two meets in March. I'll whittle down some of my choices by saying that I've always preferred Speedo suits, so would most likely pick one of theirs first. Suggestions for suit length/back/size/model? THANKS. -Danielle