Difference between +5.5 (-110) and +5 (-105)

Difference between +5.5 (-110) and +5 (-105) Please explain which is better and why. I can't explain it well to a "friend" and was hoping for a better explanation.
at the end of the game I would rather have the EXTRA 1/2 point than an extra bit of VIG saved... money i have ,,, points i need
Game will land on the number close to 4% of the time That means on/off the number is worth about 8 cents. If he bets +5 100 times, assume he goes 48-48-4 at -105 If he bets +5.5, he goes 52-48 -110 and he loses less