I cannot stress how good this collection is when just looking at the content. Quality is really where this goes south. The actual emulation on switch is just poor. Noticeable input lag, sound is off. The UI is cute for like 15 minutes and just becomes annoying and actually makes the emulator chug on PCs. Sega ages, which unfortunately is sold on an individual game basis and is discountinued, is going to be your best bet for playing genesis games accurately on switch. It's also worth mentioning that the PC version allows for romhacks to just be uploaded as mods on the steam workshop. Also the pc version gets extra brownie points because it provides access to the individual rom files so you have the choice of using a cycle accurate emulator like blastem for instance.
TL;DR buy the PC version and i hope you enjoy alien soldier

2022 Addendum:
gonna be knocking off 2 whole stars. so in 2020 sega announced they'd be discontinuing the excellent sega ages series of ports by m2. At the time they teased future switch ports of classic titles. now in 2022, nintendo has released an expansion to their online service which includes a series of genesis games ported by m2. While the selection is much smaller, the difference in emulation quality is tremendous. The input lag in this collection is honestly insulting when compared to how responsive controls feel in the NSO expansion. unless you really want to play phantasy star, i wouldn't pick this up anymore.