Infinity Reference 605cs on crutchfields isn't worth it. They're selling for $199. I got mines for $140 from a distributor. So as you can see, I chose reference over kappas because of the price. I love my 605cs components! I think they were a great buy! just make sure u get a 4 channel amp that compliments your componenets! Just because you have kick a$$ spkrs doesn't mean it'll sound good...it's really depends on the amp too!