The Shuttle America Saabs started life with a multitude of different carriers and therefore are not at all standard. They all have 30 seats but some have different gallies, some have closets etc so row 1 is not really a safe bet. Some aircraft may have legroom while others have a closet or galley inches from the seat. Plus if they need to move people for weight they move them from the front to the back. Thats all from someone I know who used to work them, plus I've flown them myself.
Also, you want to avoid at all costs seat 1A (by the door, across from the cabin jumpseat) unless you want the F/As knee in your crotch and shoe dirt from the stairs raining on your head. Thats true of most props.
The crews will tell you that the last three rows are the best, with more legroom than the exit row. But then your running into the problem with the last row: right next to the lav (its in the back on the A model). They can be pretty stinky, also the seats wont recline in the back.
In fact, going back to the lack of standardization, some of thier planes have reclining seats, some dont. Some have windowshades, some dont. Some have leather seats, some have cloth, some have US Airways seats, some dont. Some have a United paint job, some have a US one, some have half a livery, some are white, and I've even seen one in old Canadian Airlines coulours! Its like a Cracker Jack toy, you never know you might get. You might not even land at the right airport!
