Hey bro!
bearings? Confused...
And you're saying buy this or the RS8?
The RS8 has the hollow 24mm axle with the bearings that sit outside the BB shell.
The RS7 you linked to uses the square taper BB.
Square taper BB's flex but not a noticeable amount. Shimano flex even less. But it's all tenths of MMs
If you plan on keeping the cranks for a period of several years then the RS8 will cost less. Good external BBs cost £15-25 where a decent square taper BB can cost £25+
The RS8 has the hollow 24mm axle with the bearings that sit outside the BB shell.
The RS7 you linked to uses the square taper BB.
Square taper BB's flex but not a noticeable amount. Shimano flex even less. But it's all tenths of MMs
If you plan on keeping the cranks for a period of several years then the RS8 will cost less. Good external BBs cost £15-25 where a decent square taper BB can cost £25+