To me, U.S. composites 3:1 ratio epoxy is about 3.75 on a scale to 1-5 with 5 being the best.
Can't beat the price. Only complaints I have are it smells pretty strong and the 3:1 mix ratio requires more attention to detail.
These guys have a good product http://www.epoxyproducts.com/
but their web page is overwhelming and it's tough to figure what's your choices and options. I've tried their no blush product and liked it.http://www.raka.com/
provides a good product. I haven't dealt with them in a long while but when I did, service was top-notch. http://www.duckworksbbs.com/supplies/epoxy/index.htm
has a selection of different products. Silver Tip is a premium quality epoxy and you pay top $ but it is sooooooooo nice to work with. Keep in mind Duckworks is 3rd party reseller. So if you have tech questions, they are not the OEM of the brands they sell. But if you buy a System Three kit, you can call System Three for questions. marineepoxy is the same stuff raka.com sells. I've heard of a lot of people having service issues with the company that brands marineepoxy (which is not Duckworks). I was one of them. Not an option I'd personally select.
Those are the ones I've dealt with the most.
For someone in your shoes, I'd look at Raka. Best bang for the buck with easiest overall use. And they'll chat with you on the phone to help select a product.