I need a new computer also, my 10 year old Mac Pro died 3 months ago and have been deciding between a Mac Pro and a Macbook Pro. I can afford ether one. But the MacPro would sit at home while i am at work. The Macbook pro could come with me to work and be more cost effective for me. Maybe someday when i retire i will get a Mac Pro again when i have more time to spend with it. Going to get a Razor Chroma box and put in a Vega 64 card that i purchased for my old Mac Pro when it died.
If a MacBook Pro can do whatever you need, then perhaps you do not need all the power of a Mac Pro.