I'm looking at rentig/buying a new lens for weddings

[Haydn1971]

May I suggest an alternative - try a 6D with your 24-105 rather than new glass - you may want to then look at the 24-70 2.8 MkII which on a 6D will give you better results than fast primes on your 7D in low light

[Photog82]

May I suggest an alternative - try a 6D with your 24-105 rather than new glass - you may want to then look at the 24-70 2.8 MkII which on a 6D will give you better results than fast primes on your 7D in low light

What I don't like about the 6D is that it has less focal points than the 7D. If anything, I'd go for a 5D but I'm not ready to go FF yet.