aircraft certification

I am looking for a plane that can get me through private pilot and IRF training that has low fuel burn. Looking for something that is IFR or can be made IFR by adding appropriate avionics. Some planes I have considered are the Lancair 235 or 360 or zenith 601. Are these good airframes? Any other...

We've had many discussions of the advantages and disadvantages of aircraft certificated as "Experimental" but what about "Restricted?" I fly and maintain a towplane for gliders that retains its standard certification but I know some towplanes and agricultural aircraft are in the restricted...