Both Surflo and Flojet make excellent inexpensive pumps for your needs. Just find the lowest cost unit you can locate and it will give you good service. As far as I am concerned the higher price variable speed pumps by the same manufacturers are not worth the extra money and in fact can be a PITA at times due to their noise and pressure variations.
idahoair, sometimes the posts get lost in the late night clutter of stuff, especially for those of us on the western side of the county. Eastern folks have gone to bed and the post goes from the Portal list to the original posted location and few see it. Posting in the morning for us seems to work best, then a lot of eyes all over the country find it.