It sounds like money isnt a huge limiter to you, and you're just (wisely) looking for the best deal. If this is so, go for the pc's. It will give you more leeway in the future if you want to add some more light demanding corals. If you are looking for the cheapest thing that will work, flourescents can be dirt cheap if you're willing to work with it a bit. I have a 55gal, it is 4' long like the 60 youre thinking of, and I have 4-40watt t-12's (which are the biggest size tubes, Loule, the skinny ones are t-8's). With my 55 this gives me 3 watts/gal, which is fairly moderate. I plan on keeping low light corals with this setup, and I might supplement it with a 30 watt pc on one end if I need to. But anyway, I bought the strips at home depot, 2 double's, made for a workbench, for like $10 each. I also got 2 covers for them which were like $15 each. I bought 2 24" glass lids for my tank online for $15 each, and I just rest the light strips on top. Obviously this is a little crude, but it works. These strips can also be ceiling mounted to get them out of the way, or you can build a hood. But eventually you will probably want to upgrade, so if you have the cash, go for the pc's right now...