Since the Keitech craze has caught on, there are a ton of great Keitech imitators. Some of them being:
Eco Pro Swing Shad
Jackall Rythym Wave
SK Rage Swimmer
BPS Speed Shad
Biospawn Exoswim
Netbait Spanky
Reaction Innovation Dipper Series
Lake Fork Magic Shad Series
However, if you desire a more durable plastic, you're going to lose some action, particularly at slower retrieves and in colder water temperatures. Take any of the above baits and a Keitech and drag them beside the boat at slow and fast speeds. You'll quickly see the difference in actions when the baits are moving at a slower speed.