Well, My favourite place to train was at the bottom of Island 7 because of the house you could heal in and the 2 trainers;
Cool Trainer Leroy
Rhydon Lv 47: 2,053 EXP
Slowbro Lv 48: 1,686 EXP
Kangaskhan Lv 47: 1,762 EXP
Machoke Lv 48: 1,501 EXP
Ursaring Lv 50: 2,025 EXP
Total: 9,027 EXP...