The Replicator is your typical at-home 3D printer. These are the standard consumer level printers. When it comes down to it, they do the same as just about any other consumer level FDM printer. They only print in plastics, and use the general FDM technique, where you will see some layering.

As for the Stratasys uPrint SE plus, I've seen one used, and it's pretty amazing. It uses ABSplus thermoplastics, and the items that it prints look just like what they should. I don't know the price, but I'm sure it's quite a lot more than the Replicator 2X. I think it can print in up to 9 colors.