C1 is indeed quite heavy but managed it on my own. It was a shock as it was a lot heavier than the C6V it replaced - Not quite sure what makes it so heavy!
I would say the only real consideration is that if you have a very naturally light lounge or location its going in, without the ability to block out the light with blinds or curtains it might be worth pumping for something brighter - if you plan on using "good" picture settings for your content. As from what i can read, pushing up the brightness too high on most content tends to wash out the whites and colours somewhat.
For me, i think its easy to get caught up in "this model is brighter" / "this model has better X/Y/Z) but to be honest for the price I paid, and what it brings to the table for my situation - its really a great TV. Following some suggestions on picture settings I am very happy with the picture. But even out of the box some of the standard modes are great (apart from anything like VIVID - which i have NO idea how anyone can watch anything in that mode).
I got mine from my local Richer Sounds - they price matched the Smiths price for me with the 6 year warranty/guarantee.