The Hornady Lock and Load is an excellent press (I just need to order more bushings for mine!). However, if your problem is with the priming system of the Lee press, then you should consider the Lee priming tool. The Lee press you have will do a nice job for you without spending the money for the Hornady.
In my opinion, nearly all of the priming systems on all of the presses that are made sorta suck! They don't have a "positive" feel when seating the primers, and often tend to tip the primer up sideways, thus ruining the primer.
I'm just saying that you could get the Lee priming tool and the shellholders for $30.00 to solve your problem. Save up your money for a nice progressive press like a Dillon or Hornady. That way you can ruin primers much faster ;-)