If your looking to go no more then a 2" drop, You should be fine with any brand/non-brand spring.
Most all springs are made out of the same materials, The Stiffness/uncomfortable ride you don't want shouldn't be a problem because the drop your wanting is subtle.
The lower you go and the tighter the springs are compressed.....the more bounce you'll have.
If I can suggest something before you go buying new "Ebay" springs, Why don't you hold off just a little bit and continuously watch the Honda/Acura for sale forum for some used Neuspeed/Eibach/H&R Sport/Etc. springs.
9 out of 10 times used springs are just as good as New springs...minus the price.
I've owned several sets of used springs and never had a problem.
Let me do a quick search and see is I can come up with something for you.
-Jeff
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