Do you know there was a time when I couldn't live without cream poured into my coffee then I ran out of fresh cream and was forced to use powdered. I haven't used anything else since!
I like powder as well because it doesn't make my coffee cold. I am such a hot coffee drinker that I often have to heat it up if I let it sit for long at all. Powder helps keep it hotter longer.
Oh, I didn't realize there was already a thread for this! Although, I did specify flavored I have mostly used powdered just because it keeps better on the counter.
Definitely liquid creamer. The powdered kind just never tastes right to me-- almost as if it's left a residue in the cup? Plus it seems like I have to use so much more just to get my coffee tasting how I want it.