[img]users/AdrianTregoning/EXP_soloexpside.jpg[/img]Boats Database: Fluid Solo Large (expedition)

You like to run the steeps. You do it in the company of friends you can trust. You scout the lines, set up safety. But when you get in your boat, leave the eddy to aim for the horizon line, you're really going Solo .

Is there any other white water kayak with this much storage?

Maybe the Riot Big Gun, or the Dragorassi Mafia. It's not neciscarily more storage just more accesible storage.

i accually came across critical mass and i love it.

Recently I have been through a similar exercise, i.e. looking for a creek boat that has accessible storage. after fiddling with the back bands on a few of the boats, I discovered that although the Fluids have the best best back bands of the boats I looked at, none allow easy access to the rear quarters of the boat to stow kit.

Via the internet, I found the Dragorossi Critical Mass and mafia to be excellent options.
The critical mass is a much longer boat than the Fluid Solo E by nearly a foot; 282cm vs 245 and it is also more voluminous at around 305L vs 280L.
Both have a rear hatch. I have only recently acquired my Solo E so I cannot comment on the reliability of the rear, but I can convey info that many of the owners of Solo E 's I have spoken to are extremely happy with the Solo E strength, rear hatch, the boats handling in all types of water. That's the main reason I took the Solo E over the Critical Mass. Also here in South Africa the Solo is a darn cite cheaper than the Critical Mass, although cost was not the main driver for purchasing the Solo.

I think your paddling style will determine which of the two boats you choose. If you prefer to punch through the rough stuff with speed, then the CM is the boat. It's the 2nd longest Creeker available, with Dagger Green Boat being the longest. I stand to be corrected on that statement.
If you prefer to use the eddy's and currents to get you through then the Solo E will be an excellent choice.