It all depends if you want a bass that can do the classics, P-Bass, J-Bass etc. which to be fair is about 80% of all bass sounds most people would want, or if you want something that can do both P and J, everything in between and more. There's absolutely nothing wrong with a bass that does P and/or J only, but personally for me I like a bass that can go to extremes, and the ACG pre-amps do that for me. They absolutely do take some getting used to, especially if you're coming from a 'standard' non-filter based pre-amp, but if you learn how to use it, then it really does provide everything you will ever want.
I honestly think that if you spend one or two hours understanding the pre-amp, you will be able to use it to it's full potential. My two cents is that it is worth properly learning the pre-amp, once you've done this you'll get a lot more usage and enjoyment out of it. With a P/J bass you can almost 'jump straight in' and get a decent sound in a few seconds even if you've never played one before, but a filter based pre takes a few hours to 'learn', but once you've done that you'll get much more out of it and you only need to invest that time once! It's absolutely worth it in my opinion.