OP,
Actually I really do recommend trying Apache: Air Assault. As a game it's quite fun, beautiful, and satisfying. As a sim, well, the mere use of that word with the game is misplaced. It does show that there is a balance between gameplay and realism. You may lie on a point along that real/fun curve that no game currently addresses. Not that you are fishing for recommendations but I recommend walking away from Black Shark a bit. My guess is that it isn't finished. Already DCS:WH looks much better, has a much more powerful editor, and smarter AI seems just around the corner. And although a "merger" of the two products has never been promised, I would be awfully surprised if the improvements are not ported over.
But to step back a bit, while I agree that the landscape looks stale especially when compared to shooters, the object textures look great in BS.