TOTALLY up to you What are your goals for using PT? If the sites are sufficiently similar in play and game-style, then I use the same DB...if they're different (like Tribeca vs PR) then I keep separate ones. Make a separate one for your foray into Party $50. But here's my real suggestion: create 2 new DBs for your move: one that is BOTH your old $25 and new $50 stats...and a separate one just for $50. To do this, create a new one for both by making one with a name reflecting it and choose to build it off of an existing DB (your $25 one). Then, you'll want to import all of your $50 hands into this one. Create a 2nd one just for $50 and ALSO import all of your $50 hands into this one. So, you'll have 3 DBs: your old exclusively $25 DB, new exclusively $50DB, and a new combined DB

Or use a separate db for each level you play, and buy PAHUD which allows you to have more than one db open at a time - it will display the aggregated data.

If you're datamining (which you can at Prima) your db can get large quite quickly, so it's advantageous to keep its size down.

I'd recommend creating a new one every month because if your DB gets too big it can take a long time to import. Other than that don't bother using separate DBs for anything. If you need to view something in more detail just apply filters or preferences as needed.