I am pretty much convinced that most people worry way too much about what the perfect field knife is.
Get something adequate for $30 and put whatever you saved on some horrendously expensive knife you will be afraid to use to better uses.
Good advice. I know I will buy more knives
(love knives!!!) at a later point in time, but sharpening a mora 511 from my tool box and putting that through some dirt time as my hip knife was a real eye opener.