Almost everything for the CRX is cheaper... You can even pick up B16A motors for them (the first generation OBD-0 motor) for less than $700, where one of the newer OBD-1 or OBD-2 motors can be up to 2-3 times that. CRXs are cheaper and easier to build... by alot.
I would still rather have a Sol though.
Good luck with whatever you decide!!!!