I just got the 25 liter expandable Marsee pocket rocket and really like it. I like the fact that the 25 liters are all in the main cargo and not a bunch of pockets on the outside of the bag. It holds alot of stuff even when not expanded and looks very clean on the bike. It has 2 zippered pockets on the inside top flap and one main cargo area which zips open to expand. It attaches easily and stays put w/lots of magnets. It also fits on my F4i which I don't think a Cortech tribag would do since the magnet mount folds over the tank. Oops I just re-read your post and saw that you meant tailbag, anywho I like the tankbag.
I've posted this before but I really didn't like the Marsee tailbag. Didn't feel like it was stable (mounting straps on the 25liter I bought seemed too narrow).
Ended up with the Luggage Locker with the waterproof material. Fit slightly more than the Marsee bag due to the exterior pockets and rock solid.
I think the costs are at least comparable.
End of thread · 3 posts recoveredWayback Machine snapshot 7 May 2005