I've looked through three different Raven scopes, once at a gathering where I could compare it to other scopes when looking at the same objects. Another time was in a shop where a resolution chart had been mounted about 200' away. All had the standard 20X-60X Zoom eyepiece. The 30X WA eyepiece has been discontinued, so it would probably be hard to find.
My impression was that it yielded relatively bright images, had decent depth of field, was easy to use, and I found it quite sharp over the 20X-40X range. On the res chart, fine lines were very sharp at 40X. From 40X-45X it was still pretty good. From 45X-50X it was a little fuzzy but still very usable. From 50X-60X it was average at best, still usable for general observation but not good on fine detail. Its field of view is pretty average, but still about the same as the Pentax 80 w/zoom. CA is slight, just a touch of fringing in tough lighting.
Eye relief was good too, better than the Nikons in that price range. I could see the full field at up to 45X and it was very close at 50X. At 60X I lost the edges. This is while wearing eyeglasses (making sure to state the obvious.)
My take is that as a 20X-40X scope, it is a very solid bargain. Indeed, I think it holds up pretty well against $1000 scopes across this range. I think most observers would find it acceptable from 40X-50X. And if your needs above 50X are not serious, then it may meet them. It certainly is better at 50X-60X than what I've seen from $200'ish scopes.
Right now EO is packaging both the straight through and angled versions with their Radian GT tripod. EO sells this tripod separately for $119, but as it is their store brand, I don't know if it is really worth that much, although it appears to be an okay tripod. So if you want a 78mm, 20X-60X, waterproof scope, with very good 20X-40X performance, with a decent tripod and nylon carrying cases for both the scope and tripod for $369/$399, this is your ticket. (I'm not affiliated with EO, I just know their prices.)
It won't make you give up your lust for a Swarovski or Leica, especially over 45X where it doesn't even begin to compete with those scopes, but at low to moderate power it is nice.
I also compared it side by side to the $199 EO 60mm Denali and the Raven was much nicer. Brighter, sharper, much more ruggedly built, and with better eye relief.