the hoya multicoated is so cheap, just go with that - you can get it from http://www.2filter.com for $25.47. this is for the "Hoya Super HMC Haze UV(0) Filter". (The Hoya Super HMC Pro filter is a little more expensive, the only diff is that it has a thinner glass - but you don't need this). You can also get it from bhphoto but its more expensive:
I have both a Hoya warm circular and a B&W linear. There is no difference in effectiveness. Go with the linear since it is cheaper. As for the UV I would get the multi. Or, just put your lens cap on immediately after shooting since about all the UV does is protect your lens from scratches. I haven't been keeping my UV on lately since its just a pain in the a$$ to take it off when I want to use one of my other filters. I would rather not stack them if it isn't necessary.
"Auto-focus and digital cameras need circular polarizers because the linear filters alter the metering and auto-focus in these cameras. Check your camera manual to see which kind your camera takes. If in doubt buy a circular polarizer as it will work on all types of cameras."
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I made the assumption that you are using a F707. If so then my post stands as written.
Just giving the opinion of a professional photographer. I have only used circular polarizers on my 707 and gotten great results so I can't say which is better. Feel free to try, but i was careful when buying 150 dollar filters.
FWIW, I only use multi-coated filters on my 707. That means I bought the expensive Hoya Circular polarizer because I couldn't find a multi-coated linear. The multi-coat filters have higher light transmission properties, with less reflection than non-coated filters. I tend to believe that the overall differences between coated and non are small for most applications, but believe that the coating makes a difference on some images. So, I use the coated filters as insurance against those times when flare and light transmission properties would be critical.
