LATAM Airlines A319-100

No. On the domestic and regional A319 the front rows are a Premium Economy fare, which is a standard economy seat with the adjoining middle left empty and a little extra service. It is worth buying for the space and the quieter boarding, but it is not a physically different recliner, so check the published layout if legroom is what you are after.

The extra-legroom rows around the over-wing exit carry the most space, and the seat map marks exactly which rows they are. Elsewhere the cabin is a uniform three-by-three, so a window or aisle seat toward the front gives the best mix of quiet and quick boarding.

The last rows nearest the rear galley and lavatory draw the most noise and queue traffic, so skip them if you can. Middle seats without a window or aisle are the least comfortable in economy, particularly on a full flight.

It depends on the leg. On a two-hour regional hop the empty middle and quieter boarding are a pleasant upgrade rather than a necessity; on the shortest domestic shuttles it buys little beyond the service, since you are barely settled before descent. If the fare gap is small and you value elbow room, take it; otherwise a window in the exit row does much the same for less.