I have an old Cherokee (not made anymore) 3 pt. mixer I bought off one of the guy's I worked with, about 15 years ago for $100. It has way more than paid for itself over the years doing small jobs. Pads in front of entry doors, feed/tack room floors, apron in front of the garage, chimney foundations, etc. Most pours were under 1-1/2 yds. With them having to pay a 3 yd. minimum here, for anything under 3 yds., it has saved me some money. Money I put towards the rest of the project, or, paid for the total cost.
It's been 3 years since I poured a new well pit & lid, and now getting ready to pour another foundation for a chimney for the shop. Have enough sand & gravel left from the well pit job to do this one. All I need to do is get the bags of cement. I mix near a yard hydrant, and fill a couple 5 gallon buckets with water. I tend to mix a little wetter than you would get off a truck, and sweeten the mix a bit to make up for mixing it wetter. By the time I transport to where I'm pouring, it's thoroughly mixed.
When pouring the well pit walls, I sprung for a HF concrete vibrator. Worked very well, and saved a LOT of hammering on the forms, to get it to flow & settle.
For larger jobs, it's best to have everything ready to go the day before. It will be a long day from start to finish, with mixer & tool clean up in between.