New to Tris, need help with bike purchase

Hey guys,

I'm new to triathlons and "competitive" cycling.  I'm looking at getting a decent road bike for around 1k to use for a while.  I have a few different ideas I'm looking at, and I'd enjoy some opinions.

First, http://www.bikesdirect.com/products/motobecane/sprint_x.htm. It's a 2011 Motobecane Sprint.  It's an aluminum frame with carbon seatstays and a carbon fork.  It's all ultegra 6600 and comes with vuelta xrp pros for 999.

Second,  http://www.bikesdirect.com/products/motobecane/immortalpro_specialsale.htm.  This is a 2010 Motobecane Immortal Pro.  It's a carbon body with an ultegra rear derailleur and the rest of the components are 105, but comes with Shimano WH-R500 wheels for 999.

Third, my local bike shop has a 2010 specialized allez elite for 999 (http://citybikes.com/product/10-specialized-allez-elite-57586-1.htm).  the only issue is this is a 58cm, the others are 60cm and 59cm respectively, and I'm 6'2" and I think the 58cm is slightly small.  However, the Allez has all 105 components and Mavic wheels.

Thoughts?

Thanks!