How do [B]you[/B] utilise Thureophoroi and Lonchophoroi?

[Basileus Seleukeia]

That's the question, how do you use your Thureophoroi (Hellenic Spearmen)? As Flankers, or flank guards, or as extra heavy skirmishers that can be used in melee?
And what about Lonchophoroi Hippeis (Hellenic Medium Cavalry)? Do you use them to hold the enemy cavalry, or to attack skirmishers, or for anything else?
I, at the beginning of a campaign, use Thureophoroi as flank guards and flankers, but later on, when Thorakitai (Hellenic Heavy Spearmen) are widely available, I use them as reserves to catch cavalry that has coem behind my liens or for holding the Back of a flanking Thorakitai unit so that thye themselves won't get flanked.
My Lonchophoroi Hippeis have the role to block off enemy cavalry and wear them down in ongoing melee, where they excell, so that my hard hitting cavalry can smash into the rear of the enemy.
I would really like to see, how you use these units, so that maybe we can refine our tactics

Edit: Oops, could an admin please delete the brackets from the title? I thought that that way, I could make "you" bold.