If you want a great time put an Atlas on a Traveler and sit back and enjoy the sound, it is wonderful. Yes, it will be better on the Prime but that does not say it will not be almost as wonderful on the Traveler. The arm on the Traveler is excellent and plays way above its price point.
All that being said I would put the money towards a Prime and be future proof against any cartridge they come up with.
HW