We have just taken delivery of the Shimano Ultegra Di2 Electric Groupset bike. This is a great way to try before you buy. The bike is available via the store and can be borrowed to test this new system.
We are finding that the Ultegra system is more popular as it is much cheaper than the Dura-Ace version but as we know Dura-Ace has some advanced features about just a little weight saving.
If you want to come and try the Di2 bike, come into John Atkins Cycles or email firstname.lastname@example.org for more information.