Harmony 620 or Newer Model?

[Toypor]

My local Target has the Harmony 620 on clearance for $69. I had been contemplating the Harmony One, but this would save quite a bit of $. I am looking to control TV, Dish Network DVR, AVR, Blu-Ray, DVD, and CD. I have never really used the macro functions on previous Marantz universal remotes, so I am thinking a basic unit that controls several devices would work for me. I have also heard touch screen is not the greatest feature.

I also noticed that the Harmony 700 is the only unit that has the Red/Blue/Yellow/Green buttons specific to Blu-Ray. Is that a feature that would make this remote worth considering? Or are the Blu-Ray features easily handled by other buttons on the 620 and the One?

Thanks in advance for any input from the Harmony experts.