Looking back through the archives, in 2006/07 we signed:

Chopra, Whittingham, Roger Johnson, Steve McPhail and Kevin McNaughton (amongst others)

Have we ever had a window that can compete with that for players who have had a long term impact at the club?. For a total of less that we'd just sold Cameron Jerome for.

Compare that with our Premier league signings:

13/14
Medel, Caulker, Cornelius, Daehli, Odemwingie, KTC, Eikrem, Brayford, Cala, Simon Moore, Kenwyne Jones, Fabio, Jo Inge Berget
£40 odd million.

18/19
Sala :(, Murphy, Decordova Reid, Cunningham, Smithies, Bacuna
another £40 odd million

Only really Smithies has been worth it i'd say.