Help decide new skimmer

[FrenchAchilles]

Hello I have to get a better skimmer. It has to be in sump and money does have a limit. I have a 300 gallon high bio load. One issue I have is my sump is a standard 55 gallon which I really can't change. I have really come down to two skimmers I am looking at:

The RLSS (Reef Life Support System) R8-i 8" Internal Cone Skimmer
Rated for 264-528 gallons (1000-2000 liters)
This is one of the new DC controllable pump models
http://reefsupplycanada.com/cgi-bin/...ada&item=59251

Or
The SRO (Super Reef Octopus) 5000SSS
I need the space saver model due to how narrow the 55 gallons is.
Rated up to 400gal.
http://www.goreef.com/Super-Reef-Oct...0-Gallons.html

I am leaning towards the SRO just due to its has been around and tested. From the what I have read is a solid skimmer that is well like.
I am really interested thought in the new RLSS but not really sure I believe the rating when its looks to be such a small skimmer. Also with is being such a new tech not sure about jumping on the band wagon but from what I have read the few people who have it really like it and the pump apparently is dead silent which I am looking for a really quiet skimmer. From what I have been reading the size of the skimmer is not as important as the air rating hence the rlss rating.

What do you think?