I would highly recommend lurking the p99 wiki and glancing at each class description. A lot of today's p99 playerbase is well-versed in mechanics and expected play style so if your a bit rusty, no one will bug you to much about it but expect most groups to be on point if your a supporting class like a chanter/cleric. I would say it depends on what you had most fun with and are familiar with. Or like swish said, play a class you have never dabbled in and make it your main so you are learning something new in places you have been before. Welcome back!
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