ND Filters

[paintball312]

Lee filter holder + Hitech filters is the best bang for the buck IMO. Cokin holders aren't bad, and they are cheap, but their ND's and GND's tend to leave a color cast, which the Hitechs do not. Grab a 1.2 ND from Hitech at B&H for about $35.

 

[Padaung]

In the UK these are a couple of places to buy filters from, along with all the normal camera retailers:

http://www.premier-ink.co.uk/photographic/-c-60.html

http://stores.shop.ebay.co.uk/Fotobyte-uk-camera-accessories

I recently got the Kood ND grads from Premier Ink. Seem good enough for me, reasonably priced and they are a British make, which is always nice