I have used both.
I had occasion to clone my PRO to a EVO and use the EVO for a while as a windows "C" drive.
I could tell no difference in actual usage.
I might suggest that you will get better performance and endurance if you bought a 240gb EVO instead of a 120gb PRO.
The PRO is always going to be the better than the EVO, however I'd still get the evo since the price in my opinion doesn't justify the extra speed the pro has. But if you have money to burn, then by all means get the pro.
I have used both.
I had occasion to clone my PRO to a EVO and use the EVO for a while as a windows "C" drive.
I could tell no difference in actual usage.
I might suggest that you will get better performance and endurance if you bought a 240gb EVO instead of a 120gb PRO.