Light Shopping. Please help!

[OCDP]

Well, yet again I am thinking of upgrading lights. Does it ever end? Hopefully this is the last. I was going to go with an Aqualight Pro on my new 50g cube, but I have decided that I'd like to do 250w HQI instead.

My questions are... what's one of the better ballasts and pendants to use? Where's a good reliable, cheap (or fairly priced) online site to order from? I prefer to order in Canada, no US sites. Also, what kind of ballast would you use? I want to get a good 250w HQI setup.. I seen Will's (Willito) and I think he was using a 250w icecap in a PFO pendant.. with a 14k bulb.. It looked so awesome.

So, in a nutshell: What are good pendants and ballasts to choose from, Where would be best to order this from?

Thanks guys.
Scott