I bought the $288 solar package from SolarBlvd and it included the Phocos controller. First one was defective and they sent me a second one in no time. Great customer service! But the second one gave me concerns that it wasn't working up to par so I replaced it with a morningstar....GREAT unit. I suggested to SolarBlvd that they should offer this unit as an extra cost upgrade.
I recently added a Trimetric solar controller readout thingy and I love playing with it. It tells you amps in and amps out, voltage, % of bateery remaining, charge cycle and a few dozen other things that I don't really understand.......But it looks cool and is fun to play with.
As the other folks said, totally not needed, but I love "info"..... :-)