I also found myself with a bit of extra cash recently, and after buying cycle clothing from the the likes of
Wiggle and
Evans, usually their own brand. I decided that I would treat myself to a Castelli Gabba jacket and some bib shorts. Firstly Castelli clothing is on the small side, so you will need to go up a size, but I have to say the quality and feel of Castelli clothing is first class and you will not regret paying a bit extra for Castelli. I was so impressed that I placed a second order for another pair of bib shorts, a jersey and a couple of pairs of socks.
There are lots of sales on at the moment so shop around, I did, and managed to get good discounts. There are some people who like to criticise those that ride in Castelli, I really don't understand why, I say if you have a bit of extra cash then buy the jacket that you like and ignore the haters. You will not regret the quality and feel of your Castelli jacket.