Redding's Ultra Mag. The Coax is good too, IF the ergonomics work for you.
I didn't know Redding made an "entry level" press. In fact I didn't know anyone did or does make entry level presses. Some are lightly built but they give me great service for special tasks and even they are certainly good enough for most reloaders needs for a life time. Anyone buying an RCBS alum alloy "Partner" expecting to do major case reforming or produce 400,000 rounds on it on it as if it was a massive iron 'Chucker would be a fool. ??
Rock Chuckers are the standard of comparision simply because they have been made (in various versions) for the longest time so more people are familiar with them than any other, not because they are any better than the others in their class. If they were ever perfect there wouldn't have been any need to change them! There are no engineering secrets to making a press, any press that looks like another press will effectively function the same.
My 26 year old RC 2 is an okay press and I can't imagine anyone thinking it not having sufficent leverage, even for massive case reforming. But it's no better for that work than any other compound toggle link iron press. However, it tosses spent primers like crazy and I hate that.
If Lee had made their Classic Cast presses in '87 that's what I'd have; it's equal to or better than my RC in every respect and I'm too old to have a robot-like loyalty to any inanimate object.