I use a Cabelas guide spirit.it is made buy Buick knives and it has a blade made of boss 5300 steel. This may cost more than what you would like but it is by far one of the strongest knives on the market. I have field dressed about 10 deer with it over the last 5 years and it is by far the toughest knife Cabelas sells(at least it was when I bought it) Just make sure what ever fixed blade you buy it must remain in it's sheath when not being used.
Doug