I will review the bikes properly in due course, but as others have observed, it is better to wait a bit, however there will not now be a review of the Ridgeback!
The Cannondale Synapse is a superb bike in it's own right, and when coupled with the Cytronex system is ideal for someone like me who can (now) cycle unassisted reasonably well, but who doesn't want his route dictated by the terrain. Or to put it another way, wants a normal bike experience with the occasional helping hand.
I made the mistake of letting my wife ride the Cannondale, and as a result have had to do a p/ex deal with Mark on the Ridgeback. Don't get me wrong, the Ridgeback is a fine machine, however in relative terms it is a bit like letting a Toyota driver have a drive of a Lexus, and not expecting a reaction - and of course in my case being naive enough to think that the more female friendly geometry of the Ridgeback meant it was automatically more suitable.
In retrospect the outcome (for me at least)was predictable
The other interesting peripheral effect is that, rather perversely, I have a greater respect for the Torq1 now than I did before I got the Cytronex. I don't know if it's nostalgia or 'absence makes the heart grow fonder', but although I ride it less frequently, when I do, I realise what a stonking bike it is within it's own niche and limitations. Sure, the gear change is positively awful in comparison, and it is far less like riding a 'proper' bike - but maybe that's the point... it is fun to blast away at 22-23mph with very little comparative effort. Just maybe not too often now

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PS I'm doing the capital to coast charity ride on sunday (unassisted). I just can't decide whether to use the Cannondale (without battery as the temptation would be too great) or on my cheap road bike.