I'v read many guides, comparsions and no one is close to my idea.:
I have Halfling Fighter 2 / Rogue 1
I plan to go BM way with - no one can touch me.
Halfling lucky - much less giving advantage on me when roll 1
STR 10 / DEX 17 / CON 15 / WIS 13 / INT 12 / CHA 8
Rapier + Shield (+1)
Armor: In construction - I have breast plate or studded leather or mage armor (when sorcere gives me)
think about half plate (maybe later MAM to get +1 AC and dismiss DEX disadvantege) and we have forge cleric who can add +1 AC. And defense fighting style.
Because using Mage armor have same AC when I'll have DEX+5 (no shorter than lvl 6) and doesn't give +1 from defensive style
on fighter lvl 3 wil be BM an manouvers - for sure riposte, precision attack and maybe disarming (we play mostly agains people) or Commanders strike (have PALADIN with smites and Rogue/Ranger with poison arraows

)
4th lvl - second chance - DEX bonus +4, 1 chance to reroll hit on me in battle (reroll 1 crit, to lower chance to hit me.
6th lvl - thinking about defensive duelant - If I cant use riposte, I can boost my AC. Or MaM to get flat +1 AC (total: 15 + 3(dex) + 1(forge bless) + 1(feat) +1 (defensive FS) +3(shield) = 24 AC good enough)
--here come in play second chance - really good chance to miss me and if they have hit (crit), I can tell "reroll" and have big chance they miss now.
8th lvl - vice versa 6
12th lvl - sentinel (or go earlier to help party? Heavy Cleric and Paladin can help defend Sorcerer and Rogue/Ranger archer) - or shield master (avoid dex save spells - be better not only attacks against AC againts me)
Than I wanna continue with Rogue to be swashbuckler (to 4. lvl to get 1 ASi, better sneak,... or to 8 to get second ASI and bigger sneak. I think I buy Adamantine rapier, so bigger pool of dices are powerfull)
not sure what else.. martial arts feat give me more ripostes, or anything else (and can do almost any maneuver if situation call for it)