I finally was able to get an air reading on mine. At 120watts the pump is pulling right at 33lpm, which equates to 1980lph.
For comparison:
Reeflo ORCA 250 - 1980lph / $1299 ($1499 after intro price)
Deltec AP902 - 1600lph / $1869
Deltec AP1003 - 2250lph / $3275
Bubble King 300 - 1999lph / $2699
Bubble King 400 - 2499lph / $3999
H&S - Couldn't find any stated numbers on these.
ER RC750 - 3000lph / $2000
ER RC1000 - 3600lph / $2500
The EuroReef numbers are great, but to give comparison the Reeflo was set up on the exact same system as the RC1000, and basically shut this skimmer down over a period of about a month or so. I still feel like the valve on the venturi is restricting this guy by about 250lph, but I do not yet have a replacement valve as a backup so that I can start chopping on this thing. Having said that, in stock form this thing totally kicks butt, and unless you're one of those guys who wants to tinker and play, there is absolutely no modification needed at all!