First of all, if you've never been to Petco Park, you're missing out. I know the Padres aren't the most ideal baseball team to see in person but this is one ballpark that you won't want to skip.
Rows 6 thru 24 don't have many seats at all per row which makes getting in and out a very easy process. Every seat is a good seat, I've sat here two or three times over the years - it's all according to how close you want to sit to the field.
Whoever the Padres are playing that night, these seats are right next to the visitors bullpen area; just like at AT&T Park and Wrigley Field. The Padres, however, get their own private bullpen area in left center field.

The seats are comfortable enough, likely what you're expecting. Have never felt cramped when sitting in 119. Seats give a decent perspective towards the pitcher's mound.