I've had nothing but good experiences with them, with insurance and banking. I don't do much investing with them, though I have a small Roth IRA and an asset management account which is all in cash right now. Surprisingly, their FDIC-insured money market fund has been yielding more than their non-insured fund (USAXX). I'd use them more for brokerage, but to my knowledge they don't reinvest dividends on stocks.
I'm not a huge fan of most of their funds -- a handful are pretty good, but most are mediocre -- but I do like the Capital Growth fund (USCGX) which has been pretty impressive, and they may have the best gold and precious metals fund on the planet (USAGX). I'll use them for these funds and maybe a little bit in a couple of other decent funds, but these seem to be keepers to me.