OP
Weird comparison. DD probably won't work do to size but if you can afford a 400 dollar 2500 series then there's better options than the SA10.
What would you choose over the SA 10 Classic for his setup?
Just off the top of my head SSA GCON10. They excell in smaller ported applications (which is the TC's scenario). Similiar motor force to the SA but more tight/accurate and much better in the upper portion that often gets neglected (50-80hz range).And you would recommend what?
wouldn’t mind a tad bit more output.
In my exp with Sa series lack of airspace and port will get you to where you are. Utilizing a Foxacoustics Ram box that has tiny ports coupled with poor airspace underseat?.. it's a recipe for lack of extension and output.
You were better off grabbing a set of P3 shallows using that box imo.