[Sammy-ROCK!]

stock FindBestHudChannel()
{
    new EntsUsingChannel[4] = {0, ...};//Track game_text entities and get the channel their set to use.
    new MaxEntities = GetMaxEntities();
    for(new Entity=MaxPlayers+1; Entity<=MaxEntities; Entity++)
    {
        if(!IsValidEntity(Entity) || !IsValidEdict(Entity))
            continue;
        decl String:ClassName[10]; //game_text is 9 bytes so we need 10 to get it fully
        GetEdictClassname(Entity, ClassName, sizeof(ClassName));
        if(StrEqual(ClassName, "game_text", false))
            EntsUsingChannel[GetEntData(Entity, FindDataMapOffs(Entity, "m_textParms.channel")) - 1]++;//-1 so we don't need increase the array size just to keep it justified
    }
    new BestChannel = 1;
    //Starts with channel 1 then check if other channels have less entities using.
    if(EntsUsingChannel[1] < EntsUsingChannel[BestChannel-1])
        BestChannel = 2;
    if(EntsUsingChannel[2] < EntsUsingChannel[BestChannel-1])
        BestChannel = 3;
    if(EntsUsingChannel[3] < EntsUsingChannel[BestChannel-1])
        BestChannel = 4;
    return BestChannel; //Tells the best channel
}

This returns the hud channel that fewer used on the map. To cause the minimum of interference against the map's huds.