I am a former Vonage customer and switched to VOIPo 3 months ago. The added fees and taxes were almost 50% of the monthly cost so $9.99 was turning out to be ~$15 for me with Vonage.

After switching to VOIPo and using their forwarding service I am paying $4.95(no fees or taxes) and only 25cents per min after 300 minutes. I however hardly ever go over 300 minutes so almost 3 times less money for same reliable service after switching to VOIPo.