Because I believe it's the most controversial generation.

Great:
Victini
Oshawott line
Snivy line
Tepig
Lillipup
Herdier
Purrloin line
Pidove line
Blitzle line
Roggenrola line
Woobat
Drilbur line
Tympole
Sewaddle line
Venipede line
Cottonee line
Petilil line
Sandile line
Darumaka
Maractus
Dwebble line
Scraggy line
Sigilyph
Yamask line
Tirtouga line
Archen line
Trubbish
Zorua line
Minccino line
Gothita
Gothorita
Solosis line
Vanillite line (Many a jimmies will this rustle.)
Deerling
Emolga
Karrablast line
Foongus line
Frillish lines
Alomomola
Joltik line
Ferroseed line
Tynamo line
Litwick line
Axew line
Cryogonal
Shelmet line
Stunfisk
Mienfoo line
Golett line
Pawniard line
Bouffalant
Rufflet line (Best normal/flying line.)
Vullaby line
Durant
Deino line
Larvesta line
Cobalion
Reshiram
Zekrom
Kyurem (They really nailed this design!)
Genesect

Average:
Virizion
Heatmor
Cubchoo line
Elgyem line
Klink line
Pignite
Emboar
Patrat
Watchdog
Stoutland
Munna line
All Pansage lines
Swoobat
Audino
Palpitoad
Seismitoad
Conkeldurr
Gurdurr
Throh
Sawk
Basculine
Darmanitan
Garbodor
Sawsbuck
Ducklett line
Meloetta

Questionable:
Gothitelle
Druddigon
Terrakion
Thundurus
Landorus
Tornadus
Keldeo