Powertool Mate, DVS, Terrier Tools & Howe Tools tend to be the companies I buy from most often. Sometimes prices on a particular item are high, but one of the above tends to provide the best option online.
FFX charge a hefty delivery fee to NI for most items, so generally don't work out so well. I have bought from them a few times and couldn't complain, but the last order was a 110V Metabo chaser which took forever to arrive. It eventually transpired that they never had stock and were relying on an delivery from Metabo, which didn't contiain any chasers. I'd be cautious about using them in future as I don't like being sold goods that aren't available from stock, unless this is made clear from the outset. Powertool Mate delivered a triple blade one day after it was ordered and Howe Tools came through with an even better price on the chaser than the offer price from FFX. Wasting weeks on an order that was never going to arrive has stuck in my craw.