The first question would be what do you really need out of the car, the reason for asking is you have compact sporty sedan’s/coupes mixed in with larger more luxurious cars. One is most likely to be found with a manual transmission and the other is basically Automatic only. The OP is asking about cars pre CVT for most if not all of the above
The Avalon is a supersized Camry so repair costs should be pretty low and Reliability high, most of them were bought in place of a Buick of some sort (I’ts meant to be a larger cushier vehicle than the camry, but mechanically it’s the same)
The Impreza’s are great cars but the WRX models are more likely to be modified/thrashed than the regular Impreza. I work with someone with a WRX with a launch control system and other goods and he’s trashed 3 transmissions in the process. A stock WRX with the full service history should be fine although there is the turbo to consider as far as repair/replacement costs. The Subaru owners I know all love their cars and aren’t bothered by the repair costs. Sedan/Wagon is up to you, the condition of the car and the service history is most important. If Leg room in the back is an issue possibly look at a Legacy or a Legacy GT from the same era. My brother and his family love their 06 Legacy wagon and they haven’t had any issues but they’ve also been taking it to Subaru specialists since day one.
The Maxima is typically a little sportier than the TL but either should be reliable. The late model Maxima owner I know is a Nissan superfan and trades up every few years for something different/better. Before the Maxima she had a string of Altima’s
The Civic Si is a heck of a lot of fun to drive but you do have to be aware that this is another car that attracts people who like to drive fast and hard. Reliablity should be typical Honda provided the car was well cared for and kept as stock as possible. Higher theft risk than some others.