Audio Budget - What to get??

[Niall]

Will say seeing as you have the same HU as me Ginge, if you get 165vbs, amp them! They sound good through the HU but it just does not do them justice (the internal amp isn't the best in the world).
As soon as you turn it up about 25ish, they sound horrible. Through an amp (I'm running a 12 year old alpine amp btw) they sound fapping amazing!

Couldn't be more correct.

Even if you can't stretch to the amp initially, you can add one later. Niall ran his un-amped for a bit and still sounded awesome!
I can't remember what your running I the rear Niall, 135's?

165A1s. The digits are just the size thus the reason you can buy 135vbs. Although the larger speakers should pack slightly more punch but that doesn't apply if your having a sub.

If I had the choice, I wouldn't have components in the back. Focals have some serious high frequencies and when you've got 4 tweeters in the car, it can be too much when played loud (and the rears are on -3db I think)
I only fitted them because I had them spare. If I was buying from scratch, Vbs up front and some coax in the back for a tiny bit of rear fill.

Oh and you will need spacers for the front speakers which mean the original grills won't fit on