Hi,
IMO those 10X50 Pentax PCF WP are a very good choice and you will be hard pressed to do better for under $300. I have owned 2 pairs in this series 8x40's and 16x60's and like them a lot. Unlike Steve, I think you will find the 5.0 deg FOV adequate. These binos are very sharp over 85% to 90% of that narrow FOV and useable to the EOF. Binoculars costing less than about $800 may offer a wider FOV but will not be useable over the entire FOV. They may be useable over 70% of a wider FOV. I prefer a narrower sharp FOV when observing with binos.
FWIW you can source these for about $250
http://y2k.centre.net.au/Pentax_10x5...rs_0007KY.html
CS-John B