dont want a whole type paragraph just what makes it better and what doesnt. 2 6" or one 12"
Free advice comes at a cost; you don't get to choose what you get. :slap:
Here, I will be sure to not use any paragraphs...
Firstly, (2) 6'' circle ≠ (1) 12'' circle.
A= πr^2 -so- (2)6" speaker cone area: 56.5 sq. in. -and- (1)12'' speaker cone area: 113 sq. in.
As above shows, a single 12'' has 2x more cone area than two 6".
If you want speakers to go in stock locations, buy the right size (5x7/6x8) or use an adapter.
If you want loud music, don't cheap out, you need lots of power.
Look for wattage ratings in RMS close to the amount of power you can put into them.
Extra wattage rating over what you have to send to the speaker is wasted $, unless you plan to add more power later.
Don't fall for gimmicks.
If it looks like cheap sh*t, chances are it is.
Don't buy a name brand you wouldn't be proud to tell people about, that's a pretty good rule of thumb.
If you buy a speaker that says 10000watts and it's 6'', you likely failed.
A 12'' is not better than a 6'' unless you are: A. sharing "size" stories -or- B. comparing apples to oranges
Size does not make speakers (or relationships) better.
The above statement is shrouded in controversy in both scenarios.
Audition several sets in your budget that will fit, buy what you like the sound of regardless of pretty much any other variable.
Welcome to LVC.