[Flyfalcons]

Let's see how close I get:

Extra 230 and 260: Mid-wing single seat design, the 230 is similar looking to a Laser and the 260, well we all know what they look like.

Extra 300: Mid-wing two-seat development of the 260

Extra 300S: Single-seat version of the 300 with the wing lowered a bit

Extra 300L: Similar to the 300, but the wing is lowered even more than the 300S

Extra 300SX: Experimental version of the 300S with larger tail surfaces

Extra 200: Similar in design to the 300L but with a four-cylinder engine instead of a six-cyliner. Nose is slightly shorter than the 300L

Extra 300SP and 300LP: New developments of the 300S and 300L with a new cowl design and other lightening mods to the airframe

Extra 300SR: Racing Extra with an Edge-shaped wing used in the Red Bull air races.

Hope that helps.