Yeah it would be hard to dislike either of those I'm sure.
How did they compare in crosswind and\or turbulence?
Also interior room\comfort?
Again, sorry... Those two have always been on my short list.
I don't mind. And I guess the OP doesn't either, since he is thinking of a Cardinal now.
Both the Tiger and the RV9 have extremely quick and precise controls, and are great in crosswinds. They both handle like sports cars compared other aircraft I have flown, but the RV is quicker and more precise. The Grumman is heavier and has heavier wing loading, approximately 17 lbs/ft vs. 13 lbs/ft for the RV. This makes it a bit calmer in turbulence but it's not a huge difference. Both have fairly spindly nose gear(the Tiger's is sturdier) so neither is great for unpaved runways, IMO. Cabin width "felt" very similar between them, possibly a bit more room in the RV. Obviously the Tiger has 4 seats and the RV has 2 + a baggage area. At my homebase's altitude and runway length, the Tiger back seats were more or less unusable. Side and forward visibility is fantastic in the Grumman, you sit a bit lower in the RV, so the view out is not quite as unrestricted, but still excellent. Both airplanes have canopies, so you enter by stepping over the fuselage lip onto the seat and then sitting down. The lip on the RV is higher, so ingress/egress is slightly more difficult on the RV.
Both are simple, Lycoming powered, very low maintenance aircraft. I would love to have a constant speed prop on my RV, but that adds cost, weight and complexity, and the beautiful airplane I found when I was looking had a fixed pitch. I wanted an RV7 for occasional aerobatic fun. Had a Citabria for years and enjoyed flipping it around sometimes. But 7's are considerably more expensive than 9's, and the efficient wing design on the 9 seemed like a great thing for the high altitude airports that I mostly use.
My opinion: both airplanes are great choices for fast, efficient, fun, comfortable, flying (if the people aboard are not large...). If you like aerial photography, the Tiger is great for that. The 160hp RV9 is 20 to 25kts faster, burning a gallon or two per hour less. And as I mentioned, the high altitude takeoff and climb performance is considerably better on the RV, even with less power. If you decide to upgrade avionics, the non-tso'd glass panels and autopilots for experimentals are much less expensive.