Yep, ofc, for the moment I haven't found better emul than arnold for my personal use, and I have lot of luck, I m using the Future arnold core (the WIP one)

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It will be like the previous one, in C (GUI in C++), easy to port, lot of comments, easy to understand, so I have start to use it in the old version to test it, more usable for me. It's a light version, without debugger, less machine but usable from my couch (OSD, auto change disk, cheat system with joypad in the future).
I m forced to make a personal version because Arnold is an "accuracy extremist", I use lot of hack to have the new core working (snaps, sound, ect ...) and he hates that ^^ so he will never use it, and I can't use his version without theses functionalities. It's not a joke, ask him how he will make "no exit" working, you will hallucinate.
The WIP official version is almost finished for me (the core, for the GUI it's another question with this fanatic) I m using it with 3/4 games ATM, and no bugs at all, for the moment the accuracy is his priority, and at this stade it's realy hard for me to help him, but yes I m continuing to dev on Arnold on all versions I can do something.
It depends on what you are looking for, but I realy think we can have a full working version soon. He have realy do lot of work, and he spends lot of time to increase accuracy with methods you can't imagine

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Have you tried his last version ?
Edit: howww, I m looking the post date, 2 years I have stoped my version, lol, when I stoped it, I did not think it will take so long time to have a new one.