I just want to talk about the Honda CG125 motorbike which has been mainly used as a learner bike.  When I started learning to ride motorbikes, I tried a few bikes including, Suzuki GN125 and Kawasaki KH125.  I thought overall the Honda CG125 was the best by far due to its learner friendly riding position and general build quality.  The bike has enough power to cruise on the dual carriageways and enough agility to get you in and out of town traffic.  These bikes are renown for their reliability and ease of use.  Its worthwhile paying that little bit extra for a newer bike and it can be sold on for a similar price that is paid (as long as you dont have it for years).  Its definatley an understated machine that will help you pass your test with comfortable ease.