The Orbea and Giant are aluminum. The Jamis is steel. I've been riding since the early 1980s, and can say with confidence that steel bikes are alot nicer to ride. I've had aluminum bikes in the past (Centurion Facet and Vitus), but I would not buy one these days.

I have a Jamis Coda and it is really nice to ride. I use it for errands, but I originally bought it for commuting. I would prefer to have drop bars on it, but that's a big job that I'm not going to invest in since I have two road bikes for longer rides.

You might want to consider the smooth ride of steel that the Jamis Coda offers, assuming that it fits you correctly.