If I had to do a RTR, I would want to make sure that the RTR is as current as the "Factory" level kit. From what I understand, the XXX-T RTR doesn't have the features of the MF2 as far as the revised tranny.
If this is true ( going off of what I have heard ), I would go with the RTR T4 so you are as close as possible to the FT level other than the obvious graphite, threaded shocks, etc. If you do decide to upgrade your vehicle, may be cheaper in the long run than the upgrade for the XXX-T to MF2 specs.
The electronics look to be better on the XXX-T however.
I have seen the T4 RTR for $199 shipped.