I have the short fat one with the little round window at the bottom. I think it is great, no problems. Others have noted problems with the cap leaking but I suspect they did not have the seal installed properly. Can not tell you the capacity but it is smaller than stock.
Have been using the Rizoma (from PJ's) since last summer. Capacity is not an issue - either size will work just fine. I ordered the one with the window, but it's not terribly practical, since there's no light to see the fluid level through the window. I haven't had any problem with leakage. Installation is about 10 minutes, and it does look a whole lot better than the tupperware original, IMO.
It doesn't leak enough that "drops" fall. At first I just thought it was bug juice from a fat nasty mayfly or something that hit the front of the reservoir and bled to the rear as a result of the wind. It wasn't until after I'd read that other people were complaining of leaks that I really looked at it and realized that the bit 'o residue on the reservoir was actually fluid. Have never seen it on anything (tank, gloves, grips, bars, jacket, etc.) to convince me that it is a problem. Maybe I just didn't tighten it properly.
Neither of my Rizomas have had any problems with leaking. One has a window and the other doesn't. The larger one with the window has probably 3/4 capacity of the stock res but you only really need 1/2 the capacity of the stock res before you'd have to worry about anything, and even then you'd need to be doing 12 o'clock wheelies to really shake it up enough to matter.
Well, I went with the Rizoma and got it today. Gotta say it looks sweet and I'm looking forward to getting it put on. Are there any tricks to installing it ie. how do I stop air getting into the line,or do I have to bleed the brakes after instal. etc.
Use it to suck out the fluid before removing the old reservoir - makes for a nice clean removal without having to worry about how to not spill it all over the place.
I saw a good tip on T595 forum that you would use this in conjunction with:
(Don't compress the lever throughout the process)
1) remove most of fluid using the TB down to the bottom of the reservoir - leave fluid in the hose
2) remove old reservoir & install new while keeping the hose vertical
3) re-fill new reservoir
4) 'Burp' the connector hose to have bubbles rise into the reservoir (squeeze the hose)
I haven't personally used the method above for replacement of reservoir but the logic is sound & I have used the TB for removal of fluid from both bike & car many many times - works really well!
Every tool chest should have a Turkey baster in it! ;D
I went with the CT-027 (front brake), and really like it. The install was very easy after Decosse's advice. The capacity is a little less than the factory reservoir, but I don't think that it's going to be an issue.