In the next 6 months

I had the Benjamin 90 cubic inch tank, which I believe is the same as the Air Venturi one you are referring to and you are correct it was regulated to only put out 2900 psi (200 bar). For that reason I wound up getting rid of it, as my Compatto and Air Ranger both need more air. It was a nice little bottle though, easy to carry into the field. I wound up getting a 30 minute (about 44 cubic foot) tank which is also wrapped in carbon fiber but has a 4500 psi fill capability and the difference is night and day. Hope this helps.

Take a look at this ad, you should contact him:

http://www.airgunnation.com/topic/wts-9l-60min-sci-carbon-fiber-tanks-4500psi-2012-2015-manufacturer-dates-20ea/

I had the Air Venturi tank and sent it back and bought the Omega 75 cubic foot tank. Will fill above 2900 psi and has a much better hose and valve system. 

I have the Omega 75 and wish I would have bought the 100 now. When you look at the measurements between the two there is vary little difference. Just something to think about before buying

For anyone that has the Air Venturi Carbon fiber tank, it is possible to increase the output pressure with an 8mm washer. Follow these steps:

1. Remove the fill station by unscrewing counterclockwise
2. Remove regulator body by removing the three set screws
3. Replace thin regulator shim with standard 8mm diameter washer
4. Re-assemble
   [/LIST=1]
   I'm not sure how high the regulated pressure will be, so you will need to be careful when filling your gun. However, it is enough to fill a Wildcat to 230 bar (possibly higher). Number of fills is obviously reduced from the ~2900 psi regulated factory set point. This is a good fix if your tank/regulator fills significantly below 2900 psi (like mine). Hope this helps.

I have both the Omega 75 and 100. Both are easy to travel with provided you aren't trying to carry it through the woods with you. I like to use the 100 for filling 200+ bar guns and the 75 for everything else. Of course, once the 100 gets below the needed pressure, I then use it first and top off with the 75 until it's time to get them filled again.

Something to definitely keep in mind is that it will take two or three tries to totally fill the tank at a shop due to the tank heating up and having to cool down. If you're going to be traveling an hour each way make sure to find out how long they need to keep the tank so you aren't wasting time. You don't want to leave the shop paying for a 4500 PSI fill only to get home and find out it's actually 4100. My travel time is only 25 minutes but it's still a pain as I have to drop off the tanks then pick them up a day or two later. 

Also, look at what you have and what you may be adding to your collection and how long/frequently you will be shooting. Something like my .408 Extreme that requires up to 4500 PSI or shooting a 3000 PSI gun for a couple hours every weekend may have you running though air faster than you'd expect. This means you may need to buy an extra tank or two or even look at getting your own compressor.

Get one of these. I bought one from him and it's exactly as described, pretty much like new. http://www.ebay.com/itm/2015-DRAGER-SCBA-CARBON-COMPOSITE-BREATHING-AIR-CYLINDER-300-BAR-9-Liter-/232247177162?hash=item361302afca:g:2MIAAOSw4CFYq0Nb
Then contact Jimmy here through GTA and get his scba adapter. Quality parts and he ships FAST. http://www.gatewaytoairguns.org/GTA/index.php?topic=122928.0
I Got mine from him.
Then you'll have an 87 cubic foot tank that's good for almost 13 years with a nice fill adapter for a total of $445 including the shipping of the tank.

Ed

I understand the $$$ problem. I doubt that the seller will have anymore of those tanks in 6 months (maybe not in 6 days?) but if you take your time hopefully you'll find another bargain tank when you're ready. Best of luck!

Ed