best pc 5.1 speaker system in between 15k to 20 k ??

hi , my 4 months old logitech z-5500 D is dead n there is no replacement coz its Discontinued , so logitech ppl are returning my money .
so plz suggest me best 5.1 speakers within 15000 to 20000 , not more ..
i knw they have replaced logitech z-5500 with z-906 , but its not comin soon to India i guess.. so is there any option ?
i loved my z-5500 v.much , so suggest me speakers comparing to z5500. i need atleast 10' driver sub ..