What a great question!!
I guess it depends on what I want the treat for… if I’m training, I want something small enough that I can give them quickly and repeatedly, for this I find the Bunnings trusty chicken trainers are great and come In a big bag for around $17
If I’m wanting a bigger treat for a one off reason I’ll often give them bell and bone treats from petbarn as they are healthy and good for teeth.
The best home made treat my dogs love would be cut up bits of cooked chicken or meat – Left overs are always great.