It's a pity I lost the URL link to a website I once surf for a long time to look at the creative use of Speedlight flash. What was amazing at this site which put people into must-buy-best-gear-but-out-put-bad shots to total shame. This are a group of photographers who only shoot using SB-400 alone. The photos are totally amazing and most are just keen amateurs non pro shooters.
Wish I can find that site again to post it here.
With any gear we buy, buy gears you will really appreciate and use. Not buy to feel less 'inferior ' standing next to a photographer who happen to have better gears then you. No end to that. Compare your ability not gear. Gear is easy to buy by anyone with money. Talent and creativity is not.