What about the Jacob A60 (if DX still has it)? It's the king of budget throwers. Tight throwing beam, with dim spill. Might need some attention to the emitter mounting (see last page of that thread). Or if you want an XM-L thrower, either an HD2010 or a Small Sun ZY-T08. The HD2010 may have issues due to the direct drive driver and possible shorting of emitter leads to reflector (which can be modified). The Small Sun may not be driven very hard, but is still a seriously impressive thrower! I really like it!
-Garry