Indeed, this is something special, it is a lovely version of the T4 and I would have loved it had I of not had a T4 already. They still keep a good price, in the UK I've seen them for about £1600 which I think is around $1950? That would be a couple of hundred off an SX900. If the T4 anniversary would be in mint condition, then it would be a hard choice between the two I think.