cartridge for rega planar 3 - 800 range


i want to upgrade from a grado gold. any advise on the right cart for my rega planar 3/2000? i am using an audiosonics ba150 tube amp, melos tube pre/phono, kef series 105.2 spkrs, grado rs1 headphones, chang lightspeed power conditioner. i have had people tell me a better cart won't improvesound much. i do not know what to think. am considering a grado reference master. many thanks.
jiminiss0232
If you are ready to spend $800 then by all means, move up to the Benz Glider HO. With trade-in and discount, it should cost you $600.
The Grado Ref master is good. I have a Lyra Lydian b for my planar 25. I love it. Depends on the music you listen to and your system. The Lyra is 950 new. If you systems is a little rich or dark, you might really go for the Lyra.
Did a hum, when the arm was nearing the center of the LP, bother you with the Grado Gold? Grado cartridges have this well known incompatibility with Rega turntables, for some reason. I've had it myself, and wouldn't get ANY Grado for a Rega 3, though it's just a small hum, not a roar.
tom, the only hum in my system is audible with the tt off. it can be heard when NO source is playing if i turn up the volume past 2:00 on my melos preamp. it may be very mildly present before the stylus makes contact with vinyl, but is not there in the silences while music is playing; or between cuts for that matter. thanks for any and all info/opinions, etc. jim