In researching what I want to put down next spring, I wanted to ask for your thoughts on a good weed control product (granules), without fertilizer (or maybe with).

I'm of course coming across a wide range of different chemicals, and am not sure if there's one in particular I should be looking for (in CT), or maybe I should mix it up year to year, or use a product with multiple chemicals...?

The last 2 years I did the following (with decent success so I'm not trying to reinvent the wheel, just seeing if there's a better option):

-- Mid April: put down Dimension (Turf Trust Dimension Crabgrass Preventer) at about $100 for my 20k sq ft lawn.

-- Early May: put down Greenview Fairway Formula Spring Fertilizer Weed and Feed and Crabgrass Preventer (it's earlier than I'd want to fertilize, but I read great things about it). I also really like that it gives me an additional measure of crabgrass protection along with the broadleaf protection. It contains 2, 4-D, Mecoprop-p (never heard of it), Dicamba and Dithiopyr (i.e. Dimension). I like that has a wide assortment of chemicals (as I figure it has a better chance of working well vs. something that just has 1 chemical??). It was just under $120 for my 20k sq feet of lawn.

So now, in researching a possible replacement for the Greenview (so that I can fertilize separately/later in May) I came across:

http://www.greenviewfertilizer.com/store/p/Lebanon-Broadleaf-Weed-Killer-with-Trimec-Herbicide__24-35800.aspx, which contains 2,4-D, Trimec, and Dicamba (just $34 in total I think). Seems too inexpensive.

http://www.homedepot.com/p/Preen-10-lb-Lawn-Weed-Control-2464015/205156427, which I believe is a similar product to the above, but it's $23 for only 10 pounds (which covers 5k sq ft, so I'd need 4 bags, so $100). Why is this so much more than the above?

http://www.domyownpestcontrol.com/hiyield-crabgrass-weed-control-p-1571.html, for around $100 (contains Benefin and Trifluralin)

http://www.domyownpestcontrol.com/fertilome-broadleaf-weed-control-with-gallery-p-2016.html for I think over $250! which contains isoxaben (Gallery)

or any number of other products that I know I can drive myself crazy with...

Thanks for any thoughts/suggestions on either the above, or simply what you've been using and has been working well in the CT area (or nearby).