Hybrid and comfort are often used to describe the same bike. A hybrid is often described as a comfort bike because of the upright riding position. A hybrid usually has gearing similar to a mtn bike.
I usually recommend buying from a bike shop but if thats out of your budget than go with bikesdirect rather than wallyworld or a big box store.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.