Just my $0.02...
I think that 2007, 2009, 2013 are the worst shows that VS has put out.
2007 - Everything felt cheap. The segment ideas they came up with were tacky. Age of Elegance was semi decent but it felt too old / mature for VS. For some reason, the segments felt shorter too. Almost across the board the outfits looked cheap and overdone. Also, the newbies that year (excluding Candice, Behati, Lindsay) were ameteurish. On the plus side, 2007 gave us the best PINK section but if PINK is the best section in a show, then you know that show as a whole was terrible.
2009 - Same problems with 2007 but minus a decent PINK section. Also, don't forget the model search that produced a model that bit VS in the ass.
2013 - There were a few elements in the show that I like. Parisian Nights (minus Cara) was a really strong segment. Snow Angels, even though a recycled idea, was great. My girl, Constance, getting 2 beautiful outfits / wings and getting to close a segment. But even all that cannot offset the dumpster fire that is Pink Network.
As everybody knows 2001-2006 was VS's golden era. 2008/2010-2012 were a good stretch of years but they don't really compare to the early 2000s. 2014-2017 are below average shows but are still generally better than the 3 shows mentioned above. Here's hoping that we see some improvements this year.
I know that that is a lot of opinion that nobody asked for so sorryboutit.