On the limit thing, yes it's true there is still a practical limit they put on you, especially for new accounts. I was going to add that, but thought of the Rhino party and didn't come back to it.

For a new card, you can call and ask what limit they put on you. If you get close to that limit, and it's been a few months of use, with good payment record, then they will consider moving the limit up. They want to hedge the risk themselves, while wanting card holders to spend more.