Since I am currently facing the "problem" of hanging kitchen cabinets on a PP2 Ytong wall myself. Preliminary research result: Ytox 14x75mm with Spax 8-10mm. 0.4 kN in tension. But a plug also costs 68 cents...
Which is not a big price anyway. Not 10€ for a box and after the kitchen there are still some left to hang a bookshelf. Otherwise, the Fischer FTP should also have a quite decent price-performance ratio.