After a bit of consideration, I bought a glass Hario V60 03 (VDG-03B) for largish batch brewing. Most of the videos I've seen are for the 02, so I'm wondering how that will compare to the 03. I have a couple of questions, if any of you have any experience with one:

1. Is the hole at the bottom of the 03 the same size as the 02? Are the paper filters interchangeable?

2. What's a good method for brewing 500ml, 750ml, and 1L? I'm particularly interested in time and grind size (I'm using an OE Lido 2).

3. What's the difference between pouring for a Kalita Wave (155) and a cone-shaped dripper?

4. Can I assume all of the metal filters designed for the Chemex will also fit the V60 03?