New to road bikes

Hey! I’m new to road bikes and I’d appreciate any help I could get when it comes to choosing a bike. I have my eye on the following three bikes, but I am not really sure.

Sensa Lombardia Limited Edition
http://www.merlincycles.com/sensa-lombardia-limited-edition-57880.html

B’Twin Alur 700
https://www.decathlon.co.uk/alur-700-road-bike-id_8290145.html

Ribble Gran Fondo Special Edition
http://www.ribblecycles.co.uk/sed/road-track-bike/ribble-gran-fondo-shimano-105-5800-special-edition?part=SE15GRANFONDO105&sub=conf_SERW

The B’Twin is out of stock (I think they’ve got a slightly improved model bringing in an 11 speed 105 coming out), and I was wondering if it would be worth waiting for it.

The Sensa Lombardia is hugely reduced, and looks like a bargain, but I am unsure whether the reduction is just a marketing ploy as I can’t really find any reviews on it.

Lastly, I like how the Ribble is so customisable and seem to be good value, but don’t really know what I should be looking to customise.

Ideally I would like a quality bike under 1 grand with 105 or equivalent groupset, and if anyone had any ideas that would be welcome!