Hey Mona,
I use the Fill Center too and I am so happy with them. No matter who I talked to, they are very, very nice and I only can recommend them. Althought the initial visit/fill is maybe on the pricy side ($549), the following visit/fills are less ($285) and it is always with fluoro (would not want to have a fill without).
I too wanted to go back to the OCC for my fills, but the Fill Center is only 40 min. away, which is convenient in case of something shouldn't feel right and at the end it is also less expensive.
Wishing you a good restriction