Try KC Brains. You can get 10 regular seeds for less than $20. They aren't really talked about on this forum in my experience, but they used to be pretty popular like 10-12 years ago, and some of their strains apparently have won some international awards. And their still good genetics too. Also, i dont know if you know this but if you live in the states, you have to add $24 dollars to whatever the cost of the seeds are just for international & guaranteed shipping. Dont forget to put 420 as the coupon code for 10% off (at attitude seeds).
Some purists say they'll never use feminized seeds because of the way their created. Saying that because they were made from hermie parents that the hermie trait never leaves the seed and you'll end up with more hermies than viable females. This for the most part isn't true anymore. We now know that environmental factors affect the chance of getting hermies more than the seeds.
Regular seeds create pure females, but environmental factors can make a pure female a hermie too, it's just a lot harder. Regular seeds are cheaper and more stable, but out of five, theres a chance that all of them could be male.
In a well designed grow room, you shouldn't have any issues with feminized seeds. If your short on room, id say go with fem seeds.