[NL] DEGIRO vs IBKR for Short-Term Euro Trading — Worth Opening a Separate Account?

I already use DEGIRO for my long-term investments, but I want to explore short-term trading (only in Euros) as well.

Would you recommend doing that also via DEGIRO, or would it make more sense to open an IBKR account (or something else)?

I feel like keeping long-term and short-term investments in separate accounts would be neater, but I’m open to hearing if that’s unnecessary or even counterproductive.

I’m based in the Netherlands and would also appreciate any tax or cost-related tips.