So I am putting a free float fluted Handgaurd on my current build.  So I'm going to need a gas block/sight combo or gas block w/ rails.  I'm really overwelmed with all the choices and I'm wondering what would be my best options?  Any help/suggestions would be greatly appreciated!

I have used a clamp on gas block with attached font sight form Yankee Hill Machine.  Zero Problems.  Just make sure your Freefloat Rail and your Front Sight/  gas block combo are level with the Upper receiver.

Edit:  You can also go with a low profile gas block and put your front sight on the FF rail.

When I went to build mine, I looked at the Photos of others people's Ar-15 builds to get an idea.  

Gunstruction is a great tool to use as a guide

there really is no best option. just what you thing will look best becuase there are pleanty of qualitiy front sights to choose from

Only one I have experience with is the PRI offering. No complaints at all.

Some others makers are YHM, Wilson Combat, KAC, Vltor, and ARMS. Though I'm sure I'm forgetting a couple more.

I have used or installed:

PRI- loved it, still use one.
YHM-  Good for the money.
ARMS-  Great sight a little pricey.

the combo gas block and front sight adds a level of expense to a basic gas block....but i wanted one for my build as well and chose Vltor's VST...its nice.