Birthing Ball questions...need insight!

[KABB]

I am petite (5'2'' and 100lbs not pregnant). I used a Peanut shaped birthing ball during my labor with Kadie. I am not sure what size it was but it was blue and my feet barely touched the ground (haha). I contacted my Birthing Center and they do not that particular shape of birthing ball. I have begun to look at Peanut shaped exercise balls and have found them to be all different sizes.

If I choose to buy a peanut shaped ball I was wondering if maybe the green one would be better? What do you think? Here's the site I'm looking at: http://www.isokineticsinc.com/catego...Fch-5QodClVQpg

Any advice or insight on choosing an exercise ball to use during labor?

Any reason, besides the obvious shape of the birthing ball-I sat in the middle of the peanut and bounced along with my daughter's heart rate- where one would be better than the other?

[bignerpie]

I haven't seen the peanut shaped balls. It looks like it would be more stable.

I personally don't like the anti-burst balls, though. I bought one for myself and found it very uncomfortable. It didn't inflate like a regular ball, and I couldn't sit on it for very long. My doula had a regular one, and I liked it a lot better.

[Jaimee]

I have a burst resistant one, but unlike the pp I like it better than the regular ones- it feels more stable to me and I didn't have any trouble inflating it all the way.  When I bought mine I remember them telling me to sit with my legs at a 90 degree angle and have someone measure the height from floor to my thighs/butt.  That way you can tell which size to get (a touch larger to account for compression).  The peanut shape is interesting and I've never used one before.  I could see it being more stable, though I didn't feel the ball was out of control in any way.