Well, I bought my stuff from USWATERSYSTEMS.COM because they were running a special. I got a sweet clear housing for like $14, and a .45 micron 100% pleated polypropylene filter for $31... but it is reusable and autoclavable. The housing can be ordered the way you want it as far as relief button, inlet and exit port sizes, and whether or not you want a mounting bracket. I know the filter might be overkill from the cheaper through-aways... but you can do the math on how long it takes to equal the price differential from the cheaper filters.
I have not used mine for its intended purpose yet. I had a beer on tap that was yeasty post transfer, so I attached the filter pre-tap in my kegerator and it works great. The beer after that, I didn't even transfer. I just threw it in the kegerator and tapped it (it was pressure fermented in an unmodified Sanke and all the yeast was still there). I could see the yeast build up during the first couple of pints inside the filter housing, but just like after crash cooling that did not increase after the first day of pulling pints. I am really excited to use this for keg to keg transfers, but man it is so sweet inline like it is. I haven't had to clean it yet. I just let it expel the first beer out before getting a 100% next beer taste. Worked like a charm, and any oxidation is a non-issue since it is going into your glass for instant consumption.
Thanks for the thread, it is what made me pull the trigger after re-reading all the other filter threads.