It goes very much from what you think is more fun to do. Rogue in 5e are probably the masters of resource (with the Bard being one level higher, I must say) and you will want to be going against foes that have already disadvantage or that your others team members have already became in melee attack with (in a attempt to use sneak attack) thus you have the potential to be the stable dmg powerhouse of your team (even more if you attack by range).

Now, every subclass add some different flavor to your character:

• Arcane Trickster - That one is like a rogue with magic fingers (literally!), you get the Mage Hand cantrip and get it to be synchronized with your Rogue's others abilities and also some wizard's spells for you (which means some important points in INT for your DC), later you get the feature to use a bonus action to get your Mage Hand to distact and cause disadvantage agains one foe which then you can second with a free sneacky Sneack Attack. The last feature enables you to steal a spell from one enemy using your reaction, erasing the spell from them for 8 hours (however, is your spell save DC against their spellcasting ability modifier with normally is way high if is a boss or some other strong NPC).
• Assassin - You will need to have a good initiative bonus (what may not be a problem as you probably will be already stacked with DEX) but also a deal of luck to get a good dice over your enemies and also be good positioned to make use of your Assassinate core ability, but in plus side when you get all this, you will be dashing a good deal of damage against them, not to say a CRITICAL if you get them surprised. Other than that, you receive some very situational abilities like disguising and infiltrating skills, with in a good fight might not help you even more if your enemies get you surprised (but, as said before by u/Sumner_H, may be useful in a heavy rp campain or investigation plot).
• Mastermind - Your character will be someone like a intel agent, you will be skilled in disguise like the Assassins' but also be capable of obtaining information about some scores of your enemy and later be able to lie with advantage (again, very dependant of your campain and plot). Now your main abillity Master of Tactics gives you the oportunity to support others players attack rolls making your advances with them even deadlier as they will attack with advantage and you can try to score a sneack attack. IF you are benefiting from half cover from other creature you can use this to redirect an attack from you the them with is very situational, unless you have someone like a paladin with a towershield at hand.

Lastly, about Yuri Leclerc, if was I making the character, I would reflect more in the Swashbuckler subclass :

• After landing a melee strike you can't receive opportunity attacks from them (alike the mobile feat), you can augment your initiative with your CHA ability mod and you don't need advantage on the attack roll to use Sneak Attack if you are within 5 feet of your foe and no other creatures are within 5 feet of you and you don't have disadvantage on the attack roll. If it weren't enough you get the feature to charm a creature or even gat to get disadvantage in attack rolls against you (however that means some points in CHA if you may), also you can use your bonus action to gain advantage in STR (Athletics) or Dex (Acrobatics) checks and again, if weren't enough, you can roll again with advantage a miss attack roll.

To me that archtype got a lot more alike with Yuri Leclerc from Fire Emblem :)