Until last season I thought I was batting with a 2lb10 bat... weighed it and it came in at 2'14.
For me, the weight issue is 50% what's in your hand and 50% what's in your mind.
The weight distribution on a bat is the key factor - this is where the OCD comes from. Moving the weight towards the pivot will always improve pickup (Amplus etc), and that's what people refer to when quoting weight (Which we all know has very little to do with pickup what so ever).
Bats should always, in my opinion, be picked up and felt for themselves. Weight is fairly irrelevant as pickup and feel is what most people are actually interested in. If one bat is 2lb10oz, it does not mean it will pick up the same as other 2lb10oz bats.
(To be honest, in coming to this conclusion, I have been through more bats than I am sure many of you have been through in a lifetime.

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