Hi Mike
With little pre-meditated thought, my spur of the moment favourites are as follows:
Omega Centauri
NGC 3576
Helix HaRGB
M16
Very faint Intergrated Flux Nebula (IFN)
M83 in Hydra
Galaxy cluster in Grus
Dusty Seyfert Galaxy NGC 4945
NGC 1365
You have a really nice website that is easy to navigate, well structured and intuitive to browse.
Cheers
Dennis
PS – Oh, almost forgot, you’re also pretty good at astrophotography
PPS - Very faint
Intergrated Flux Nebula (IFN) should read
Integrated 
PPS - I hereby retract the above smart alec comments 'cos I have just seen how big and strong you are.........
