>>38218220BW:
+ Handled legendaries the best of any game (subjective)
+ 4 Seasons
+ 3 rival trainers, one of them being a serious threat, one of them being a friendly professor assistant, and one having a maturity arc
+ Team Plasma is a threat to your way of life, not just some flashy terrorist gang stealing pets
+ New pokemon that are unique to the region
+ Double battles can happen in the wild, along with random events
- The bottom screen is now useless
- Fair amount of backtracking
- Some items/pokemon are locked behind season, not day/night cycle
- no gambling
- Some pokemon have high evolution levels, Golurk is a horrifying example
HGSS:
+ Bottom screen for easy menu access
+ Pokemon follow you
+ Voltorb Flip
+ Great rival
+ Dragon's Den no longer sounds like your GBC is dying
+ Pokealthelon is a minigame barrage if you're into that
+ Berries can be farmed and carried
- Pokemon distribution still kinda sucks
- Lance is still a Flying-type trainer
- Team Rocket is stupid in this game
- Who the hell is Lyra and why does she matter?
- Only thing that hints to getting Lugia in HG/
Ho-Oh in SS is a key item from some Hiker in Pewter City, wtf
- Dragon's Den song is still shit
Choose for yourself, OP.