Cumadin vs. Pradaxa

I have been taking Cumadin (coumadin) for 4 years. It started when I was diagnosed with A-fib.
I have been told that Pradaxa is a better blood thinner.
Should I switch?
My cardiologist is ok with that, but did not go out of his was to recommend the switch.
Are Pradaxa side effects more serious than Cumadin (coumadin)'s?
Thank you.

[Burton Dunaway, PharmD]

Clinical studies show that Pradaxa may prevent more strokes than Coumadin (warfarin) in patients with atrial fibrillation who have a hard time keeping their INR within the target range.  The major benefit is that patients on Pradaxa do not need monitoring or INR checks like those taking Coumadin. Pradaxa and Coumadin are very similar in regards to bleeding risk as a possible side effect. About 30% of patients in clinical studies experienced heartburn or GERD do to Pradaxa. Pradaxa can be taken with food to minimize stomach discomfort. Pradaxa also costs much more than generic warfarin, but the actual cost may work out to be similar when the cost of Coumadin monitoring is added.