Uranium stocks ranking

Only found 4 stocks traded in U.S. that people can buy, others are traded in Canada and Australia.

1. FRG. Market cap is $700M. It's a uranium and gold discovery company, therefore there is zero production cost and permit application process. There is a great up potential should it announce new discovery, which happens every few months.
2. CCJ. Market cap is $12.86B. The largest uranium company in the world, recent accident in Cigar Lake caused its price to dip and other junior uranium stock to soar.
3. EMU. Market cap is about $740M. Energy Metals Corp began trading on the NYSE ARCA. Energy Metals is currently developing their Texas uranium in situ recovery mine for production in either late 2007 or early 2008. It has many reserves in U.S. Mainly use ISR (in-situ recovery mining methods) to produce uranium, which costs about $30/lb to produce. Reserves are around 100m lbs, plus or minus 15m lbs. Since there are lot of historic data, it's hard to accurately calculate its reserves. But suffice it to say, they have lot of reserves.
4. URZ. Market cap is $124M. It is a recent entry to the American exchange as first pure-play uranium company to trade on this exchange. Uranerz is now the second publicly traded company, after Cameco Corp. Mainly use ISR to produce uranium, which costs about $30/lb to produce. Reserves is about 13m lbs to 26m lbs.
5. Out of these four stocks, I like FRG the most, CCJ is the safest. I think both EMU and URZ will outperform CCJ in the long run, but these two are considered very risky, just like FRG.