I bought this PCI card to replace my Philips SNU5600 wireless usb adapter and I must say my wifi performance has improved significantly. Installation was very simple; it took less than 15 mins in all to get the card up and running and that was with me, a complete novice, installing it.
The wireless signal is almost always at 100% (Excellent) compared to around 60% (Good) with my old usb adapter, this is probably helped by the wired aerial which you can move around in order to get the best signal. I have also yet to experience any dropouts with this PCI card.
Downloads feel a lot quicker; speed tests bring back results of around 4500-5000kbps compared to 3000-3500kbps with my old usb adapter. I have also noticed that my computer seems to tick over less when using the internet through this card.
In all I'm very pleased with this purchase especially as it was half the price of my old usb adapter. Another thing to add was the free delivery from Play.com was very quick; the item was dispatched Wednesday and it arrived Friday morning.