I have a BK2-Ontario RD4-Ontario NS4-Schrade SCHF3- and the Condor Rodan. All are 1/4". Of the pry bars I have the RD4 is the best of the bunch. I do like the NS4, but the slightly curved blade can be a pain to sharpen with my set up. I think the full flat grind works best on big knives. With the Ontario's you get better steel and no plastic grips! Rodan is nice, but the solid fixed grip seems to be really fat at times. I ground mine down a bit.
Another good budget pry bar is the Cold Steel GI Tanto. Under $30 and nothing but rave reviews. I have never owned one, so I can't comment on it.