It really just depends on when and where. Some days I just use a lanyard and some days call for a full blown boat bag. More often than not, you will find me wearing a fishpond blue river chest/lumbar pack. It can be slung around the shoulder or worn as a waist pack. Also improvises as a wading belt if that's important.
If a bottle holder is important to you then I would check out the Dragonfly Guide LTE which is new for this year.
I generally despise a vest, but I have a Gore Range Tech pack on the way.