Jose,
	Have you looked at the STAMP  tests from AVANT Assessment
(http://www.avantassessment.com/ 
).
	They're standards-based, have a good price point, and test all four  
skills. The major downside to them is that they don't do a good job  
post ACTFL high intermediate, and I think they're still more K-12  
focused than higher ed.

	Regards, Jeff