I can't really think of any that were especially great tbh, soap really doesn't seem to do funerals well at all. Dunno about actual worst but one I really, really disliked was Lucy Beale's. Absolutely nothing like a real funeral, barely anything said about her, the Max crap, it was just rubbish.
Sadly Deirdre's really wasn't very good either, which is a real shame for such a legendary character.
Pretty much any funeral in Hollyoaks is shockingly poor.