Re: Ross F1 or Van Staal C-Vex
These are two reels that have not gottern a lot of ink in this forum. Both fine products though and, this is not a diffinitive answer to your question just an "instinct", I would lean toward Ross F1. It is a newer design with a highly rated drag from a fine company with a new big buck owner.
From a more logical perspective; bring in your rod and see which one balances better with it as the van Staal is a heavier reel.