I'm considering selling my mackie onyx 1640i for a interface with minimum of 16ch and preferably 4 mic pres. At first I was pretty set on the apollo but have recently discovered nebula plugins and I am pretty interested in them which would make a lot of the uad plugins I was looking at less useful. Also after hearing some a/b comparisons with the apollo to other interfaces such as RME UFX and Apogee Symphony I actually preferred the latter.
Currently I own a UA 4-710d preamp, adam a7x's, ashley clx52 comp and an adequate amount of mics for the time being. I'm also thinking of getting another 2 channel pre later in the year. The UAD plugins I'm currently interested in are the 1176, la2a, precision maximazer, studer 800 and apex 102 so if I don't end up getting the apollo I will probably buy a duo satellite down the road.
My main question is what decent $1500 to 2500 interface would you recommend if you were in a similar situation to mine?
I've decided to post this here as I do a lot of my recordings in peoples living rooms, churches, schools and uni's so I guess my home studio set-up is a portable one.

Also I'm mostly interested in recording acoustic music although I would record any genre.
Also the current DAW I'm using is Logic but am looking to switch to reaper because of the nebula plugins.
Thanks