Unsure how prices are for you in Greece, but around here I have a really easy time recommending the QFR (CM Quickfire Rapid) as a starting TKL. Great bang for your buck. You get what you need, no fancy unnecessary stuff and the board is very very solid (especially for an entry level board). People often compare QFR to Filco. Obviously, Filco is better buildquality, but you're also paying double for a board. Personally, I'd rather have 2 QFR and mod them instead of 1 Filco. But that's just me. YMMV

If you want lighting effects, get a Ducky and don't look back.
The quietness of the board depends on:
1. What switches? Blues are loud and clicky, browns and clears have a small bump (produced small scratchy noise), and red/black are linear and silent.
2. Do you bottom out? Cherry MX switches actuate/register about half way through the key press. On my current board with 62g lubed blacks I am completely silent since I don't bottom out (unless gaming). I only hear noise from the stabilizers on my spacebar and the occasional bottom out clack.
3. The keycaps. Different keycap materials/profiles/thickness will change the sound your board produces. Thinner is generally higher pitch noises.
4. Board (Case/Plate). I do not know much about acoustics so it will be hard to describe this. Different boards sound different based on materials etc.
I may be missing some points. Others may be able to help.
PM me if you have questions about stems and springs and finding the right switch for you.

Edit: If you can justify the price, I'd just get the Filco and swap its caps out. Only bad thing I've heard about Filco's is their stock ABS caps suck and their cases may have a small pinging issue (ping meaning noise from plate/case). Others can provide their input on this.