Mostly HP5. Because it's just so damn flexible.

Will get me a bunch of Foma films for some experiments in the near future though.

I disagree about the developer usage.

1L of Ilford Multigrade developer is good for developing something like 2-4 square meters of paper. Most amateur users will definitly not exhaust that in a session.

Stored in proper(!) bottles, you can use it perfectly fine for multiple sessions. Thats what i do.

Proper plastic bottles for chemicals can be had very cheap and are totally worth it.

Mehr als 100% Aufschlag ist halt schon auch ein bissl frech.
Gut verständlich das sowas im Laden mehr kostet, aber irgendwo sind auch Grenzen.

14 Euro für Schläuche?

Was sind denn das für Premiumdinger?