135mm BMW piston connecting rods ?

[Laimis]

Hello,

I wanted to ask which one of stock 135mm BMW rod is the strongest ?

I have few options here:
M20B25 - 135mm - 626g
M50B25 (non-vanos) - 135mm - 593g
M52B28 (single vanos) - 135mm - 570g
Weight info is from ETK...

Anyway, i see that M52 rods are lightest, but what about strenght ?
All opinions and personal experience is welcome.

P.S. Sorry for posting in english.