I bought Web Grenade, Caltrops, Triage Beacon and force field generator which i later respecced into Web Grenade, Caltrops, Force Field Generator and Acid Mortar.
I found the Triage beacon to be a clumsy power at best. It slightly increased regen but the amount of times i placed it only for the combat to shift and i have to move away from it and lose the benefit of it is unbelievable. If it were mobile like the FFG then i'd definitely reconsider it.