Just remember 1and1 are mass market so you wont get the personal service and support you get with smaller hosts, but what you do get is proper uptime guarantees and enterprise level stability and protection.
I got attacked recently and had around 20 sites hacked - 1and1 spotted the breach, locked down the doorway, 444'd all the affected files and I had a restoration of my entire package within an hour - that's what I like about 1and1.