The Integra M is ok, but nothing special, and a bit dated at this point.
I assume the CX650 and not the CX650M (modular)? The "650M" isn't quite as good.
If 550W is sufficient for your rig, opt for the cheaper of the CX650 or TS550 - both good quality units.
Personally, I'd lean towards the XFX unit, SeaSonic made.... but either should serve you well.