I have bikes with the following tubes

531 DB

531 C

Ishiwata triple butted, splined

SLX

SLX, with shaped chainstays

753

Dedaciacci ZeroUno

Aluminum

I can tell the differences between the Al and the steel bikes. I can tell the difference between the 531 and 753 bikes, due to weight.

Other than that, with a good quality tubeset the greatest difference arises from the wheels and tires.

I prefer to just ride a bike and enjoy it.