Just save your money and download Sonic 1 Forever, Sonic 2 Absolute, Sonic CD Restored and Sonic 3 A.I.R. if you want the best ways to play the classics.
This collection is serviceable, but that upsetting. Because this should've been amazing. Knocking out points for lower quality music, not using MJ's music for Carnival Nights, Ice Cap and Launch Base, Sega needing be reminded to fix obvious issues (Some like the blurry pixels took a full year), still charging extra to people who bought the Digital Deluxe version, $40 price tag and Sega rushing the game.