accomplished, and respectfulSpecifically, my early INS experiences involved extremely slow processing, with delivery generally being some significant amount of time beyond the maximum time allowed by law (go figure) ... but right now USCIS seems to be consistently delivering early on many things. It's possible that they're just efficient in the limited scope of my type of application, but since it's all I know I can only assume that they've generally improved.
Significantly less than 3 months after our initial application for a greencard based on marriage was submitted, I have already got greencard status, and am only waiting for the physical card (but have a stamp in my passport which provides me the same status, including right to work and re-enter the country, already). That's pretty staggeringly good in my book.
They're delivering so fast on their greencard processing that they gave me greencard status without my needing the EAD (Employment Authorization Document) or Advance Parole (sinister-sounding, but what it means is the right to travel and come back in to the country) to tide me over.