I listened to the 1C about 2 years ago and found they had a very nice sound but fairly week in the lower end. You would definitely need to add a sub for full sound. That said, I really was impressed by the 2C and it was one of the final three speakers I narrowed it down to. It has much better bass response and is just a better speaker all around. If you can, I would wait and save the money for the 2C. It's just a better option. I think the 1C was about $700 here in the states and the 2c was about $1300 to $1400. I think.
Also, if you do go with Vandersteen, make sure you can return the speakers if you don't like them. Vandersteen seems to be one of those, "love'em or hate'em" speakers. I like them alot, but some do not. For music, they are very good speakers. For HT, not so much. At least to my ears.
Good luck,
Shinerman