I hope I dont run into the same problems as above.

My experience with coinbase has been positive. I have moved about 75K in trasactions with them. Buy instantly as well as selling on an almost daily basis. I sell my mining coin on a daily bases to show income for tax puposes. I have been doing about 600 a day when btc is over 900.

So far the only problem I have had was before I had instant buy enabled.. I had an order in to buy but had to wait, during that time I moved money to a different account and when coinbase went to withdraw it was NSF transaction cancelled, not their fault at all.

If I start having issues with them in the future I will post back here.