What kind of saltwater eel should I get?

I currently have a 50 gallon saltwater tank with two tomato clowns and 1 Lawnmower blenny both species healthy and happy water checks always good I am wondering what would be a good kind of beginner Eel i should get I am new with snakelike fish although i did have a saltwater hag fish which died within three days of purchasing.If anyone knows what kind is good for beginners it would be very helpful thank you