The post that said spend your money on training is so bang on right.
Men, and its mostly men are obsessed with kit, and dont spend as much time and energy thinking about training. Hence you see overweight, underconditioned cyclists, runners, swimmers, with expensive bikes, shoes, gym membership who get smoked by the guys and girls with their arse hanging out their pants so to speak.
A £1000 of good training will beat a £1000 spent on reducing your bike weight by 1kg any day.
So before you spend that money on kit ask yourself if at the moment you have pushed the bike you have as far as it will go.