I really like the Hanover Band's period accurate using Beethoven's notes for a London performance. It is radically different than any other that I have heard.The chorus is hands down the best, with a trim tone and not a huge wash of vibrato. Also much faster tempos.The period instruments finish off what I consider a great project recording.
I have not heard the John Elliott Gardner recording,but I am sure it would be excellent,because he is a choral director first and a big Symphonic director second.Very much in the English tradition.