As you are the one to ask, what weapons do you recommend to use/avoid as Pyro these days? I've not played him in ages but I'm trying to pick up my neglected classes.
Right now the Degreaser and axtingisher are pretty much the standard pyro loadout and for good reason. As the degreaser only affects afterburn damage (from 3/sec to 2/sec), its pretty much an upgrade to the regular flamethrower due to how much of a joke afterburn has been since around the time jarate came along, now pretty much every class has some way to either put it out on themselves and/or teammates (Madmilk, Airblast, Sandvich/Steak, Jarate, Medigun/Krits, Dispenser, Dead ringer) or just make it not much of a threat (Bonk, Equalizer, Targe, Medic regen).
The degreaser and powerjack is still viable with the set-hat. Though probably not as powerful as the Axtingisher, I still use it from time to time though
It doesn't matter too much about whether you choose the shotgun or flaregun at the moment and it just comes down to personal preference, though right now the shotgun probably has the better synergy with the degreaser due to the way the flaregun reloads.
If you want to use the backburner you'll want the backscratcher as your melee, the extra health from medkits can help him survive behind the lines for a little while longer, and a medium health kit can almost heal for full health.
If the beta changes go live the flaregun will probably become a bit more viable with the degreaser as you'll get the full crit even at close range. Not sure if the flare jump will be a viable weapon with the normal pyro loadout, but it should be awesome with the new buffed backburner, it depends on how they balance it.
Home wreckers still situational, but can be useful on the ocasional defense.
And normal axe is as useless as ever.