Hertsnewb, if you are near Aston Hill, you must be near to Tring, ring Mountain Mania or pop in, they will be able to help and also rent out bikes too. This might help with sizing. In the Tring shop they stock Scott (Aspect?), Trek (X-Calibre?) and Whyte (801?), they are good lads and speak straight IMHO. At this time of year they will be looking to shift stock for next years bikes so a deal may be available to you.
Mountain Mania Cycles
10 Miswell Lane
Tring
Hertfordshire
HP23 4BX
Call us on 01442 822458 or Email Us.
Open Monday to Saturday between 9am and 6:00pm, open late till 7.30pm on Wednesdays, Closed on Sundays.
Parking Available on Private road directly outside the shop.