I have had both and I prefer the comforts myself.. They are very comfortable to me.. If you don't like the ones that come with them, you can always buy the others. The ones included work fine for me..

Thier the best $40 pair of shoes I have ever bought (Thanks bowlingball.com)
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One day when I grow up I hope to be able to throw the ball AND carry as good as g_thing!!

I just got the comforts 2 weeks ago to replace my sst6lx's. I like them very much and has already been said they are a great deal from bowlingball.com.  
 They feel to me like they are a little wider and provide a little better stability than the 6's. What I really liked was the fact that I just pulled the sole and heal off the 6's and stuck them on the new shoes and had a shoe that performed identical to the old ones. The quality of materials seems to be a little stronger and I hope these last a little longer as I have a tendency to wear out the back part of my shoes for some reason.
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Whether you think you can, or whether you think you can't... you're probably right.