I have several Reates, but not the Wave. Each one is a great knife. I've eyed the Wave from time to time but just can't bring myself to drop that much money on it. I'm not in love with the current color and finish options, so I might be persuaded if they ever offer other options. Based on my experience with Reate, you can't go wrong with any one of them.
I do have the Kizer Velox 2 and it's a great knife too! Significantly cheaper than the Wave as you can actually find Kizers on sale and I've seen the Velox for as low as $150. I kind of bought the Velox as a compromise. I'd initially dismissed it because it looks so similar in finish to the Kizer Gemini, which I'd already owned. I wanted the Reate/Liong Mah SDC (still do) but couldn't drop >$300 at the time, so I grabbed the Velox as a similar, low-profile tab flipper for half the price. After using the Velox, I actually prefer it to the Gemini and it's kind of kicked the Gemini out of my EDC rotation. Just be warned, the Velox requires a specific "push button" style flipping action to deploy snappily. When flipped that way, it's an awesome flipper. Other methods tend to yield mixed results.
Some others to possibly consider:
Benchmade 484-1601 - This is new, just got it the other day and I'm really enjoying it
Reate/Liong Mah Warrior 1 - If you can find one...
Southern Grind Spider Monkey - Not a flipper but a sweet little knife...
ZT 0808 or 0450 - Both great frame lock flippers with somewhat different ergos.
In terms of sharpening, what steel is in your Sebbie? The Wave is M390, which I love but find a little hard to sharpen. The Velox is S35VN which to me has always felt a lot like S30V, which may be the steel in your CRK? I've always done OK with S35VN or S30V.
Good luck!