My road bike drive was pretty worn at the start of the year so I replaced the cranks, chain, cassette and rear STI with 10 speed stuff. To save money I didn,t bother with the mechs and front STI. Iv since replaced the front mech when it seized up. Now Christmas is coming round Im thinking of asking santa for a 10 speed 105 rear mech (£30 on CRC).
The question is...... is there actually any real difference between 9 and 10 speed mech's or should I just ask for chocolates?