I've used mine now twice, both with pellet only loads. My first brew was to be a whole leaf but I switched to pellets at the last minute as I altered my recipe a bit. That one was only an ounce so it went very well. The last brew I made, I used 5 ounces and pulled a 45 minute whirlpool with a 10 minute cooling recirc and my plate chiller flowed perfectly the whole time. 30x30 lets a little trub through but not nearly enough to clog the plate chiller.
You have to recirc PBW to get the hop trub out of the plate chiller afterwards as a simple backflush wasn't getting much out but the thing is flowing the whole time without restriction so I am ok with the PBW recirc. I should have probably been doing that more in the past anyway...
Overall, I'm very happy with my setup but I'm only 2 batches in. I need to do a huge IPA to see if it can handle a very large load but I think it will be ok.