I'm sure you guys all know this, but if you are leaving your radios, transmitters, collars, etc. in your trucks or anywhere else in the heat the batteries are taking a real beating. I started to get much more battery life when I brought mine into the house instead of keeping them in the garage.
Our club bought about 8 two packs of the higher end Midland GTX's about 3 years ago. I believe they were around $80 a pair and they've surprising not grown any legs during our 4 events we hold each year and they're all still rocking the original rechargeable battery packs. Very nice radios, water proof so if it rains they don't short out and they've taken quite a bit of abuse over the last couple years. I think out of all of them we've only had one stop working entirely.
On the rechargeable batteries be sure you are not getting Ni-Cad batteries they are junk and will last a day or so.
Spend a little extra $ and get the lithium rechargeable ones they last for a few weeks.
And please don't cut off that bird boy. He is a fine young man, and his commentary is usually priceless.