When I bought my (used) CIJ Jazz off here a couple of years ago it had Fat Beams on, 45s. Since I'm not a fan of steels and preferred 40s I found them to initially be a bit of a struggle. That is until I gigged the bass and heard what they sounded like! So full and rich with a gorgeous midrange! Blimey! I soon found I got used to the feel and actually started to prefer the higher tension. I decided when they needed replacing to go for Nickel LowRiders, 40s, hoping they'd be like a nickel version of the FatBeams. They are nice but they're not FatBeams. I'll be going back to the Fatties on my next change, buying single strings to make a balanced tension set of 45,60,80,105 and now that the price has come down I'll be having a set for my Carvin SB5000 as well.