I've had several since 1999 but have settled on my beloved 2001 Litespeed Tuscany and my latest, a 2015 Cannondale SuperSix EVO carbon
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The Jamis Quest posting has been deleted. Sold?
IMHO I'd go with the Felt (I own a Felt ) or the Specialized.
I'm guessing you're on the short side (5'-8" or less) since they're all 52-53 cm frames.
The Mercier and the Jamis Eclipse are doubles. The others are triples. Triples are for lots of climbing (BIG hills and mountains) so the extra chainring is kind of a waste.
Have you visited any bike shops in your area? You may find a good deal on an entry level road bike in the same price range.
Let us know what bike you get.
My bikes: 2001 Litespeed Tuscany---2015 Cannondale SuperSix EVO carbon
Welcome to BF! The right bike for you is the one that’s the most comfortable and efficient for you to ride. The only way to really determine that is buy test-riding the ones you’re interested in. After that, the one that’s the best buy is the one that’s in the best ready-to-ride condition and will need the least service/maintenance/repair in the foreseeable future. Good luck with your shopping!