Hey guys

I'm looking to buy a Tri-bike but since I'm in Denmark my choices are a bit limited.
All three bikes are new but from last year and cost roughly the same so I'm looking for any kind of advice or experience you might have.
The Cannondale and the Focus are fitted with 105, and the Fuji is fitted with Ultegra.
I'm 177cm (~5'10''), with an inside leg-length of 80cm (~31'').

I'm training for an ironman and will definitely get the bike fitted but I'm a bit worried about back-pains since I've suffered from them before.

I might be able to try some of the bikes at the store, and will definitely do that, but I'm not sure it's possible with all of them.

Any advice or recommendations are much appreciated.