Sound system help!

[Szym2020]

I am currently in the process of installing a full sound system upgrade for my Polo, and I am not exactly an expert when it comes to this stuff.

I have done lots of research online and came to the conclusion that I know what speakers and tweeters I am going to buy, but I am stuck on which sub-woofer to get.
The speakers I am planning on getting are Pioneer TS-G1730F and Pioneer TS-G170C (these come with tweeters I believe).

However, I am thinking of either getting:

Pioneer TS-WX300A
Max Power: 1300W
RMS: 350W
Which comes with a built in amplifier.

Or

Pioneer TS-A300B
Max Power: 1500W
RMS: 500W
Paired with an amplifier: Pioneer GM-A4704 which is 520W

The price difference is around £75 and I would like some opinions on which one I should get or whether or not there are other substitutes which may be better for a cheaper price. But ultimately I would love some input on what I can improve with this setup, or whether or not it is good and help me make a final decision.
Thank you.

[eki912]

I would strongly consider fitting Focal speaker kit. If I don’t remember wrong there is a special kit for VW’s available from them.
I have used their speakers in several cars, and have always been pleased with the end result.
Haven’t fitted these in a Polo though, so cannot say if the kit is available for Polo, if it fits, or how they sound in a Polo.

[Szym2020]

Thank you for your reply. They are a bit too expensive for me, and I am trying to focus more on which one of the subwoofers I should get.

[eki912]

Try finding them from used markets, like ebay or something.
Got myself a set a while ago for very little money.

I also saw someone mentioned this little device that might be good too :

https://www.caraudiocentre.co.uk/produc ... -41038.htm

With DSP and brings in BT too...