Can anybody tell me how well Lion runs on a 13" Macbook Pro 2.26 GHz core 2 duo with 4 GB?

It's running Snow Leopard at the moment but I like the OS on my new iMac 27" and would like it on the laptop. Quite new to all things Mac (I was running Mostly Windows 7 on the MBP until recently!) so I need a bit of advice before I buy Lion.

Thanks!