Buy now, the EVO X is ugly as hell.
If you were picking between the 06 STI and the 06 evo then i wouldnt be able to help you because they're both perfect. But since you'd want the 05 STI (big mistake.... the 06 is so nice), then go for the evo.

~Ryan 1999 T-Red SVT Contour 41k Miles #1701 / 2760 B&M, Custom Y-Pipe, Alpine HU, Pioneer 6x8's & 6x9's