I get a chuckle out of the "RJ bad" crowd. If it was a much smaller Gulfstream, you'd be dancing in the streets.

I don't like riding in the back of the cramped coach class 50 seat CRJ. But, sitting in first class on the "90" seat version (which is typically configured with 74-76 seats) is not too bad.

Some of the differences are 1+2 abreast seating in first class, vice 2+2 in coach. Also, the floor has been lowered in the larger CRJ, and the windows raised twice, and made larger. Overhead bins have been made larger, twice.

The larger airframe is actually very quiet in the first class cabin, in comparison to many aircraft (mostly do to modern turbofan engines far away in the rear).

Air conditioning / heating is more robust, and better distributed, with automatic controls in the cockpit (50 seat RJ heating / cooling controls were/are really bad).

Obviously, the CRJ tube diameter is fixed at 8'10", so there are limits to its size, and to some degree it's length, like any plane.

However, it's actually longer than a B737-700 (119'4" vice 110'4"), and is only 10' shorter than a B737-800. Obviously, the 737 has a huge advantage in size with a 12'3" diameter.

So, in summary, not "all the same".