>>53610534>HeartGold/SoulSilverStill the pinnacle of the series with lots of content and multiple injections of S O U L. I still slightly prefer the originals for nostalgic reasons, but these are the best mainline games the DS has to offer.
>PlatinumSimilar to HGSS. Massive improvement over Diamond and Pearl. I appreciate Sinnoh as a region more and more as time goes on.
>Black2/White 2This game has some really cool moments and QoL features that made them interesting to play. Being a direct sequel to a previous game was unique. Some great post-game content too. A fitting last hurrah for the DS era before the 3DS ruined everything.
>Black/WhiteA streamlined adventure with a strong narrative focus. Only being able to find new Pokemon in the main story was great. Feature wise, a downgrade from HGSS, and the plot-focused approach was a warning sign for how the series would later develop. Still fun to play nowadays.
>Diamond/PearlDecent with some glaring flaws that were fixed in Platinum. Didn't deserve what BDSP did to them.