I'm a new convert to Ping drivers- recently bought a Rapture v2 and it kicked everything elses ass, and managed to get it a fair bit cheaper than the top end Taylormade, Callaway and Titleist drivers. I was really surprised but for me it was considerably in front in terms of distance, forgiveness and straightness.
I also think Ping are the all-time greatest manufacturers of putters. I had a really old copper Ping Anser putter for years and years and it brought me all the way down from a 36 handicapper to single figures. I had brief departures with Odyssey and Scotty, put I always go back to Ping. I now have an Anser G5i, although a part of me still loves that old copper Anser.
In contrast, I've always hated the irons. When I've tried them they always fly well and go far, but I hate the feel (some might say "solid", but I think "hard") and generally hate the look (remember the Ping Zing irons with a huge protruding toe). No doubt they are quality products but the look and feel isnt for me. I've had a look away from Titleist irons a few times but nothing compares IMHO- they to me are the best.
I also really like Ping's general approach to business- you cant buy them direct off the internet as they want their products to be customised to the needs of an individual golfer, and their marketing always seems to me at least to be relatively low-key and instead rely on the quality of their products to speak for itself (vs the likes of Nike etc.). I personally like that ethos.