Brat (Brumby!) more desirable in my book. Better load tray setup - front and rear of rear axle, Baja has only rear of the rear axle.
But the Baja drivetrain is “better” by today’s standards. The little EA81 in the brat does it’s job and is basically bullet proof but the power and torque of the EJ engine coupled with the AWD box is more desirable items to have under the bonnet of the brat. Power to weight ratio is awesome with this setupin the brat.
At the end of the day you’ve got to be the one enjoying looking at it and driving it. The brat can feel quite agricultural if your other car is a late model. It’s a step up from a tractor with its heater and ability to do highway speeds
I love my brat (Brumby), and hope to be doing an EJ22 and AWD box swap in the near future, keeping the stock drivetrain for later if I want to revert back to stock.
Lastly, the brat had a very long production run compared to that of the Baja.
Cheers
Bennie
Edit: the Baja is only available stateside. I believe it was a Subaru of America conception against the advice of Subaru Japan. Belly flop, but a very unique vehicle for the Subaru line up too.