I am planning to buy a 17" MBP. I do video edit for my hobbie by using finalcut HD. Does SSD make a difference for MBP's weight? Which one is better to chose?
SSD is drastically faster than an HD. If you can afford one, get it.
The only down sides to a SSD are price and storage. Upsides are longer battery life, lighter weight, no moving parts, much faster speeds.