The only way to get this done is to see the displays in person. Then you can decide if it's good enough.
The L650 is quite a different line from the a-215. Did you see the L650 on display before purchase?
I'm having trouble finding a laptop that has a really good display. I've had a Toshiba A-215 and it had a great one--deep blacks and colors and contrast. However after two years it just couldn't go anymore so I went and bought an L650 yesterday. The blacks were gray and inconsistent through the screen, making it horrible to watch movies with any dark scenes. So I took it back to the store and exchanged it for an HP Pavilion dv5, which the Best Buy agents said had deeper blacks. It didn't. Does anybody know of a laptop with good deep black and good contrast that is under $600 and doesn't have an extremely tiny screen?