My personal opinion is that it's not nearly as wonderful as Glen Onoko for the following reasons:
1. There are wooden stairs, everywhere. (This might be better though for those with issues walking.)
2. You have to pay to get in. ($13 per adult...)
3. It's a lot more touristy. (And therefore less personal.)
The scenery is still breathtaking though.
Clearly I'm an outdooray, nature girl... I can't live in this cold for much longer.