Decisions: Zenfolio vs. SmugMug

I am faced with a big decision to make in the next few days. I need to figure out which is a better location for me to serve my clients. Both of the main competitors have great advantages and disadvantages. And I am curious to hear your thoughts...

Zenfolio.com
This service has always intrigued me, and it is $50 cheaper than SmugMug at $100/Year.

or...

SmugMug
I've been using SmugMug for the last few years, and they have provided great services and support. It's services cost $150/Year.

or... maybe you have a better solution?

Decisions... Decisions... Why must it be so difficult?