Activ-L is basically an upgrade of Prodisc-L (improvement of several features). If you can get Activ-L, you should absolutely go for it.
LP-ESP is a completely different type of design, but it sounds promising. If I would not have gone for Activ-L, I would have chosen LP-ESP.
I recommend continuing the fight for the ADR. The results are really impressive. I don't even remember having surgery most of the time.
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2015 Lost ability to sit
2016 Gradually worsening despite conservative treatment
2016 L4-L5, L5-S1 activ L success!
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