First of all, go for the rMBP. If you want an upgrade to hold onto for a long time, go for the newest. I assure you that the high-resolution will be standard in a couple years.
Second of all, a lot of people will say just get it now or wait forever, but a lot of them also upgrade every 2-3 years. I have the same exact model you have and unless you absolutely need it now, I'd suggest you wait. I have no plans to play early adopter on Apple's test machine again, especially when it's this expensive. From experience, the 1st version Apple products always always have some shortcomings that are a just a little annoying now, but become a giant nagging nuisance later.
Reasons to wait:
1. Haswell is coming sooner than you think (sometime this year, guaranteed)
2. There may be an incoming price drop on the rMBP
3. You were already an early 1st gen adopter of the 2006 model. You want to make that same mistake and get burned again?
4. Highly unlikely, but always a chance of a base spec bump, like upping the RAM to 16gb standard (again not likely, a guy can dream though!)
5. Slim chance of a minor redesign to fix any issues they had in the 1st version
Second of all, a lot of people will say just get it now or wait forever, but a lot of them also upgrade every 2-3 years. I have the same exact model you have and unless you absolutely need it now, I'd suggest you wait. I have no plans to play early adopter on Apple's test machine again, especially when it's this expensive. From experience, the 1st version Apple products always always have some shortcomings that are a just a little annoying now, but become a giant nagging nuisance later.
Reasons to wait:
1. Haswell is coming sooner than you think (sometime this year, guaranteed)
2. There may be an incoming price drop on the rMBP
3. You were already an early 1st gen adopter of the 2006 model. You want to make that same mistake and get burned again?
4. Highly unlikely, but always a chance of a base spec bump, like upping the RAM to 16gb standard (again not likely, a guy can dream though!)
5. Slim chance of a minor redesign to fix any issues they had in the 1st version