I would suggest the storm lipped lures ,( one similar to the max rap I think Long thin with three hooks ) half the price of rapala , works just aswell , and for sure cast beter .
However above mentioned will work very well for leer vis and elf , as they dont dive so deep tank max 1.5 m .
Other lures you might have a look at too is a strike pro , think its also 50 grams 14 cm , dirt cheap .
Or get yourself a couple of clones , those catch anything KOB , leerie elf . Cast like a bullet and it's lekker as its a locally made lure .