Which one do you think is better - comments with cards...

Or comments without cards, but with a highlight on-hover...

Please comment with reasons for your choice. Thank you!
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        Andrey Yasko
    
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 I am leaning towards comments without cards, as this would add yet another element that needs to be customisable, and would also require extra margins, so when you see comments in, say, a timeline card, which is sitting withing a block, you'd end up with 3 sets of margins on each site, eating up at least 60px of space on mobile. 
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        Andrey Yasko
    
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    - · Jeremy
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 Just another couple of elements to manage and worry about whether it works for everyone and all device screen sizes. 
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    - · Baloo
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 Sometimes, elegance is in simplicity especially in the design. 
 
            
            
        