Not too worried about the seatclamp cluster, I think the 21 looks quite tidy. Also, I did not need the lower headset position that the 01 offers, so no added value there. As a trade-off you get a standard seatpost and relatively standard (for Time) bearing top cover - something I valued for my external cable, rim brake, simple bike
In the end there is of course the important argument for the 21 was that I could not justify the added cost for a 01. Since financials are different to all of us it is not really a debatable item. Money no object I would've chosen an 01 (cooler paintjobs, more lightweight street cred and the simple fact that it is the top model), but yeah, I'd found such a good deal for the 21 ('deal' as in buying an extra frame is never a good financial deal :') )
In general I recommend buying what you truly want (so long as you are not putting yourself in an awkward financial position) because it will make you the happiest and prevent the 'what if' scenario. Afterwards please share the pictures