>>11877059> AbraCons:
2x damage from Ghost (Ecruteak)
Learns no on-Psychic moves by levelling, so no type coverage
Pros:
2x damage to Fighting (Cianwood)
Has STAB on all attacks (as Kadabra)
Learns Recover (as Kadabra)
> NidoranCons:
Not SE against any upcoming gyms.
Ineffective against Steel (Olivine)
STAB on almost nothing.
Pros:
0.5x damage from Fighting (Cianwood)
Learns Double Kick (and probably other Fighting moves), SE against Steel and Ice (Olivine and Mahogany)
Your choice.