What’s AI subscription is worth getting?

I don’t really know how to make the title for this, but my main question is, what is the best AI subscription to use for my specific use case, and if it’s worth getting at all. I don’t work in a field that I can really use AI in, I’m a student pilot and working towards getting into an airline. I love computers tho and tinker a whole bunch, I made a media server for my family with plex and Ubuntu server and used perplexity and Gemini to help me build it, and I use Claude and ChatGPT for a multitude of general questions, I recently started using Claude for code and more general questions like car advice and life shit, and I haven’t really been using ChatGPT as much because it’s free version gives me wrong answers most of the time. I’ve also been wanting to implement AI into some automation things (that’s only gonna be with LLMs so that’s a different story). I also have recently started a car detailing business which I want to implement for bookkeeping, general questions regarding the business, etc etc (if that’s a good idea).

OpenAI so generously gave me a one month trial and it got me thinking, I really like using AI and I want it to make my life easier in any way, especially when it comes to my business but that hasn’t really taken off so my personal stuff is more what I’m questioning about, is it worth getting an AI subscription, and if so, what AI should I get it for that covers all my needs? I only really want to be using one AI as I don’t want to be jumping between different ones, I want all my stuff to be in one place.