Dedicated lines wire choice

Dont really matter 
120 is 120, 
But you will have the outlets exactly where you want them = no power cords running all over the room = nice move
however you might want to look at my newest power cords, 
~~~~~navships silver plated copper 16 gague with 100% pure copper pulgs = nicee, super fast current with this super high tech cable.
I made my own, sloppy, ugly and takes time,, navships is makinga  pair as we speak, I will upload a YT vid and post here on my navships topic.
Trust me, his silver power cord is top dawg, no one can touch his quality his price.
+ he has silver and copper RCA interconnects he is making as we speak, 
Top stuff, 
look for these are more in a  few weeks,. So yeah, either wire + navships silver power cord, all my units, 
1) Jadis Defy7
2) Jadis DPL
3) cayin cd17 mark 1,
all have these navships silver power cords,. 
all are very happy campers. 
clean fast juice, 16 gague, perfect!!!!!!! and I can make them 10 ft, 12 footers any length i wish. 
= do not need to hire electrican to re-run the outlets. 

Would the metal clad be better than romex or no difference  I want 2 lines 1 for front end and one for amps Guess i could use 12/2 for front end
Also would like one for my sub, It is M/L B212, 12/2 for that? Going to use 10/2  on amps i guess,.They will be several feet apart At one time i had Krell amps
 10/2  on a 30a breaker with no problem, I will be doing the work myself.
Do not know code in florida but i will take a look.
Thanks, Mike

If you use the red wire for ground you need to mark them with green tape and in some areas that still might not be code, best to check.

Run one line not two. https://systems.audiogon.com/systems/8367

@ fruitloopsr, 240 Volts 10/3 Awg, 120 Volts 10/2 Awg. :-)

Ground in conduit is code here. Ask a local electrician.