DH's favorite is Kirsten.  I'm really favoring Megan lately.  My grandmother was Margaret and it feels similar.  Pros/cons for either?                 
                together since 2006 
full time stepmom to SS1 and SS2 since 2010 
married since 2011 
TTC since 7/2011 (no planned bc since 2008) 
HSG 11/2011:  one blocked tube 
S/A 2/2012 and retest S/A 3/2012:  normal 
Bloodwork:  normal 
2nd HSG 5/2012:  clear 
Femara cycle 5mg #1 7/14/12 + IUI #1 7/23/12 = bfn 
New RE appt 8/14/12 
IVF #1 meds 8/30/12.  ER 9/14/2012:  7 retrieved, 6 fertilized.  ET 9/19/12:  1 perfect embryo 5dt.  
 Beta #1 BFP! 97 
 Beta #2 234 
 Beta #3 4937 
 ultrasound #1 heart beat 127 
 10/20/12 graduated!!!
 EDD 6/7/12 
 Team PINK!!  
 
Re: Megan vs Kirsten
Baby #2 Due 3/7/20
Anyway, Megan is NMS personally, but as a Kristen, I Can tell you people rarely if ever get my name wrong. Occasionally someone will call me Christine or Kirsten when they are getting to know me, but considering how many Chris- style names there are for girls out there (Chrissy, Christi, kirsty, Kirsten, Kristen, Christian, Christine....etc) it really doesn't happen often.
Oddly I think that's why I like Kirsten. I remember when it was her Molly and Samantha and I fell in love with Kirsten as a name.
So obviously I prefer Megan.
That said, I do like Megan as well.
I'm meh about Megan. If you spell it Megan, I like it better than any derivation.