yeah i would skip the retina macs.. not worth the extra money at this time
Maybe for the 13" but even that machine's screen is just beautiful to work on. $1700 for a machine with integrated GPU is a bit much to swallow (for some) regardless of resolution.
The 15" rMBP is just about where the 17" MBP was before they axed it. Now, if you were talking about a killer mobile workstation then sure, but then you are making a drastic shift in weight.