I have no experience with the 24 but from all i've read it is one of the best EP available and performs well in all scopes. It will give you the widest FOV available from a 1.25" EP. In your case it is likely the best option.
That said i own the 19mm and in my 12" dob and Megrez 90 it is my favourite EP without a doubt. Nice eye relief and a wide, generous FOV that is sharp to the edge, and it barlows very well. At the time of purchase the TV 32mm plossl was already in my EP case and as it provides the same FOV as the 24mm it was an easier decision to go with the 19 than you have.
The following link is extremely useful when comparing different EP.
http://www.televue.com/engine/TV3_page.asp?id=89