I am getting back into trials after riding a little bit as a youth.  I have read all the 'best newb bike' posts here.  Ideally I would like a 200 or 250.  In my price range there are very few of those available.  The majority are 125's or 270-300's.  I am fairly light at 144lbs (9.5 stones?) and 5'10".  Also I am wayyy to old to worry about being required to ride a 125  
What do you think?  125 or larger CC bike? 
Thanks for the input!