Looking for help with IF nested function limit

I've researched a few options but havent been able to make anything work.
Here is the formula I know would would if the limit were not 7....

=IF(C5="AT",K5*9.5%,IF(C5="Cr",K5*9.8%,IF(C5 ="Du",K5*9.8%,IF(C5="OH",K5*9.5%,IF(C5="PWC",K5 *9.5%,IF(C5="Sc",K5*9.8%,IF(C5="Sp",K5*9.8 %,IF(C5="To",K5*9.8%,IF(C5="Tr",K5*9.8%, IF(C5="UTV",K5*9.8%))))))))))

Well I've added a few more values now totaling 14...

I tried this and I get a "false" AND then the correct answer, obviously because the correct value is in the second IF statement.

=IF(C5="ATV S",J5*9.5%,IF(C5="ATV U",J5*9.5%,IF(C5="Cr",J5*9.8%,IF(C5="Cr T",J5*9.8%,IF(C5="DS",J5*9.8%,IF(C5="MX",J5*9.5%,IF(C5="Off", J5*9.5%)))))))&IF(C5="PWC",J5*9.5%,IF(C5="Scr" ,J5*9.8%,IF(C5="Sta",J5*9.8%,IF(C5="Sp",J5 *9.8%,IF(C5="Sp T",J5*9.8%,IF(C5="Tr",J5*9.5%,IF(C5="UTV",J5*9.5%)))))))

The I tried this, but I get "formula contains an error"

=LOOKUP(C5,{"ATV S","ATV U","Cruiser","Cr T","DS","MX","Off","PWC","Scr","St"," Sp","Sp T","Tr","UTV"},{J5*9.5%,J5*9.5%,J5*9.8% ,J5*9.8%,J5*9.8%,J5*9.5%,J5*9.5%,J5*9.5%,J5*9.8%,J 5*9.8%,J5*9.8%,J5*9.8%,J5*9.5%,J5*9.5%})

I'd REALLY appreciate any help you can give...I'm stumped.

-

=IF(OR(C5="ATV S",C5="ATV U",
C5="MX",C5="Off",C5="PWC",C5="Tr",C5="UTV"),J5*9.5%,IF(OR(C5="Cr",C5="Cr T",
C5="DS",C5="Scr",C5="Sta",C5="Sp",C5="Sp T"),J5*9.8%,"bad entry"))
'--
Jim Cone
Portland, Oregon USA
http://tinyurl.com/XLCompanion

As an alternative, would it be worthwhile evaluating a VLOOKUP instead?

One benefit would be that additional values in C would just take 1 change, as would any changes in the %.