I have decided to compile the list for the sake of those who find it difficult selecting which leagues are the best for the o/v 2.5 goals.
From my research and experience the following leagues have a very high chance of producing results at least up to 89-90% chance-this is not to say that they are 100% perfect but at least you will make profit from playing these leagues.

For Over 2.5 Goals the following are very reliable-

1.Germany -Oberliga Schleswig-Holstein

2.Norway- 2 Division avd 2

3.Austria-Regionalliga West

4.Germany-Oberliga Hamburg


These are leagues that i have personally played and i've found them very useful.
To use these leagues go to soccervista.com and see if any of these leagues are available for the day, look through the matches and select the one with the highest predicted scoreline.

Please avoid accumulations as one match may not turn out as predicted.

For under 2.5 Goals,the following will deliver the goods-

1.Iran-Pro League

2.Italy-Lega Pro Grp B

3.Algeria-Ligue 2

4.France-National league.

5.France-Ligue 2

To profit from these leagues just do the opposite of what you do when selecting for over 2.5 goals ie go for the match with the lowest predicted scoreline.