I think you need to make the distinction between "Racer/Trainers" - typically 250-300g for a UK9 (mens) and "Competition Flats" which will weigh less than 250g (some even sub-200!).
If it is for a half marathon, my advice would be to go for the former as the extra cushioning will be more useful over the longer distance for injury prevention etc. If you are tempted to drop down to 5k/10k then the flats would definitely make a difference IMHO.
Chin up SL, I know exactly how you feel. It will come good again, I'm sure.
News from the SJ camp is that after a couple of bad runs last weekend caused by a combination of too much booze the night before coupled with hot and humid conditions, I have taken the radical decision to swop my daily bottle of wine with three litres of water as a little experiment for a couple of weeks.
Much to my enormous frustration I have to report that so far it has had a very positive impact on my running.
GFB - after this wedding is over and things take their inevitable sequence of events, have you given much thought to the prospect of being "Granny"?