I have a Tony Ryan extension that was rendered useless in a weeks time. The soft rubber inside that keeps the extension firm to the butt of the cue started peeling backwards and before long I couldn't get any of my cues into it without the rubber messing up. I had to keep keep re-applying/repositioning the rubber each time I used it until I got so frustrated with it that I finally just tore all the rubber out of it. I should have sent it back. I can fix it myself when I find the right material to put inside of it. In the meantime, I bought a Longoni extension and I like the heck out of it! It costs more than the OP probably wants to spend, but it is just the ticket for me. I have never used a Hager extension, but they look like they would work well also (and they are cheaper than the Longoni). Heck, if it's good enogh for Johnny Archer (the Hager), it must be good enough for anyone.
Maniac