Macbook Pro 15' vs Macbook Pro Retina 15' for FCPX and Motion 5

Hello

This is my first post on this forum. I'm from Poland so sorry about any mistakes in my English

At this moment I have iMac mid 2011 with i5 2,5GHz procesor and 14GB ram. Now I want to sell this computer and buy new Macbook Pro 15' becouse I must take computer somewhere else than my house. I need this laptop for edit short movies and party movies with FCPX. I'm makinh films on Canon 600D and 7D. Witch Laptop is beter for my job? MBP 15 with i7 2,3GHz, 16GB ram and 500GB HDD or MBP Retina i7 2,3GHz 16GB ram and 256GB SSD? I don't want demon od speed but I need comfort or work. Is feel I big difference of work on iMac and new Mabcook? In Poland Apple Computers is very expensive so I feel big difference of price Retina and Not Retina. What do you think about my choise? I need help

MBP Retina i7 2,3GHz 16GB ram and 256GB SSD

I have it, with an Elgato T'bolt single SSD, bus powered portable drive. I love it.

I agree, & you will definitely need an external ThunderBolt drive so your software & projects/media can be on 2 separate drives. Quality is expensive, yes, but worth it.

Although I am shopping for a sizable, portable USB 3.0 drive to test out for editing in the field.