Wide angle lens recommendations

Looking for a wide angle. probably mostly for scenery. will be using on a sonya700 and a580.

plan to use mostly for landscapes and maybe very occasionally for indoor room/church views.

right now narrowed it down to tamron 10-24 and tokina 11-16. ( have sony 18-250 so that range is covered.

Know the tokina is a 2.8, but if do landscapes assume I would need more depth of field than 2.8 so is that still an advantage.?

thanks
Joan