I'm currently using Bilstein 40mm inverted dampers fitted into a bespoke front strut, the actual insert is the classic MK2 Escort tarmac spec. 300/70 and with a 190lb spring it works well on smooth and bumpy tarmac.
The commonly available Bilstein insert to fit the Corolla is a B6 and here is what Bilstein say about them:
http://www.bilstein.de/en-uk/products/h ... lstein-b6/I have a set of B6's but I much prefer the MK2 inserts.
The Bilstein B8's are as far as I'm aware the B6's with a different internal bump stop.
I guess the adjustability of the Koni is nice if that is your thing and it is also possible to fill them with a different grade of oil to change the damping, they are only adjustable on the rebound side however.
Mine is a tarmac rally car and as such there maybe certain criteria that I need to meet that a race car does'nt and when I did not need to deal with really bumpy roads I used TRD blue 4 way adjustable front inserts and they were brilliant, much better (imo) than the B6 Bilsteins.