Ive just bought another echo mod a 2011 model which has a better geo than the 2013 one in your first link and ive had the sl which you have added in your second link.
Imo the earlier model has better geo than both of them but out of those two it would be the SL everyday for me feels very light and the wb is a bit longer plus the ti bb and bits are nice too.
Edit. Take the advice above and go custom because you would have to change some parts on them echos especially the brakes which will set you back about £300.