What record weight for Rega RP10

"I am using a Kleos and have it set up pretty darned good."

theo- the Lyra is on the same level as Apheta.

Arguably, not being fully optimized with a Rega arm?

"want to try the Rogue Ares II Magnum or a Sutherland"

You may not be hearing what the Lyra is capable of using a phonostage lower on the food chain <$2500 or so?

Tube(Rogue or whatever) can be a game changer to some ears.

Hagerman for just over $1K seems to get positive review as the "punches above it's  price point" box. I don't  know however, if there's enough adjustability to optimize your  Kleos?

Tablejockey. I have considered getting the Alpheta as it would eliminate any error in setting it up. I eliminate the shims and everything else falls into place. 
I currently use a Linn Linto for phono stage and really want to upgrade it but currently have been dealing with some health issues, so I haven’t been wanting to make the drive to the closest dealer to audition the Rogue. Unfortunately the Sutherland products aren’t represented locally so then I would have to do a mail order. I realize that Music Direct does a 60 day exchange, but I would rather A-B with one that is broken in. So that brought me to the question about the weight as that was an easy cheaper tweak. But I have come to the conclusion that it most likely won’t make any difference if any. 
so I guess that until I can go audition the Rogue and compare it to my Linn I will just have to wait.

thank you for your input 

It's a matter of design.....my Linn sounded much better on a lightweight thin wood shelf I put together with brads, than anything "audiophile approved" I tried.

I have a Rega P6 with a Hana ML mc cart and I use a Michell Engineering clamp (the Rega-specific version, which is made for the correct spindle height). It's lightweight, made of low-resonance Delrin, and uses the twist/collet-type clamping method.

To me, music sounds tighter and more precise, with better soundstaging and crisper transients (although I know how subject many of us are to hearing what we want to hear...)

I can't see how the clamp would stress the spindle bearing, as it only compresses the record to the mat, platter, and subplatter, all of which ride on top of the bearing.

I had a LinnSondek that really opened up when used on a balsa shelf that I knocked together with a couple of small brads