I've bought two of them (a 300 and a 400 micron) - in fact i'd be willing to sell you one if you'd like, that is after you read my opinion.
For me, they suck and I will never use one again...nothing to do with construction as they are well made, more to do with functionality.
the main issues i had were (bear in mind I use an electric element brewery):
there is not an actual boil inside the filter - in fact i measured the temp with my thermocouple reader and found it to be 210-211 inside the column. not a big deal, but sort of agitating.
the big deal was that the screen quickly gets clogged with proteins from break, which prevent osmosis into and out of the column, which affects many things most importantly hop extraction. i literally could lift the entire basket out of the boil (mid boil)and have the liquid line remain at the same level as when it was in the pot, with only a slight trickle at the seams for the wort to drip back into the boil.
this was even more comical when i was chilling/whirlpooling which i do via recirculation through my chiller with the use of a pump. i put the output back to the kettle inside the filter and watched the liquid level outside the filter fall whilst the filter filled completely to the top, even despite the fact that the top 2-4 inches of the screen was completely clean and untouched during the boil.
I attempted 2-3 brews, each, with pellets and whole, and then bought the more porous screen to no different results.
the runoff was indeed cleaner, and clean up of the boil kettle was a bit easier (although now I just use a shop vac to suck out the pellet cone which isn't all that difficult). the cleanup of the device itself was also easy, but using it was aggravating, and i did feel that my house IPA recipe, which I have made consistently for years, was a bit diminished in bittering and flavor. i could have adjusted for that, but the benefits did not outweight the aggravation.
I use a Blichmann hopblocker now, which after some tribulations works fine for me - I think it really only works best with Blichmann kettles. If I wasn't using that, a good whirlpool, time to settle and a pickup tube against the side of the kettle works just fine as well.