My annual contract is coming up... should I stay ... or should I go?

I have been a voipgo customer for almost 2 years, and the service has worked very well. 

I only emailed customer service once last year, about a credit that hadn't been applied, and never heard back.

Given the previous reviews, I was expecting my phone to suddenly stop working one day and it hasn't..

I emailed sales yesterday and heard back in 24 hours.

They have the best selection of features, flexibility, number availability and price.  

My annual contract is coming up... should I stay ... or should I go ??