It depends on the class for me.
For a Paladin I really like the Zariel Tiefling for two more smites per long rest that don't eat a spell slot. Plus they look cool
For any stealther type I really like dark gnomes. Awesome saves & stealth advantage and 24m darkvision, plus I like their look.
For any mage type I like Githyanki for the armor proficiency and the psionics.
I've got a Duergar strength Ranger with heavy armour level 5 and 7 levels of Tempest cleric. Dual wielding heavy weapons and casting lightning & thunder spells. Multiple resistances, 24m darkvision and looks really cool with the dark skin, scar across the Volo eye and the one sided face tat. Everyone and their cousin is a drow but a Duergar is something new.
Not a fan of the Dragon born, the look just does not do it for me. I'm glad that they got away from racial stat boosts since dragonborn would probably have ended up with strength and charisma which would have made them the obvious choice for many classes which would be bad.
I could see the appeal for a wood elf due to the mobility.
I find that with longstrider on everyone that the short races keep up just fine.
