If I were in your position and wanted one gun with a $3000 budget:
I would look at mid-to-high level 1911's ( Colt, Springfield TRP, Ed Brown, etc.) in the $1200-1500 range
Get a really good IWB holster $100-200
Get 4-5 really reliable mags like Wilson 47D ~$30/ea
Spend a couple hundred on a decent reloading setup
The rest I would spend on Training; a class at Gunsite, Thunder Ranch, etc. and learn how to really run that 1911
I would look at mid-to-high level 1911's ( Colt, Springfield TRP, Ed Brown, etc.) in the $1200-1500 range
Get a really good IWB holster $100-200
Get 4-5 really reliable mags like Wilson 47D ~$30/ea
Spend a couple hundred on a decent reloading setup
The rest I would spend on Training; a class at Gunsite, Thunder Ranch, etc. and learn how to really run that 1911