Valhalla Vest by Terignota — Zero bounce, carries everything including mandatory gear, fantastic pricepoint, super thoughtful design. Plus, the founder Alex is awesome!
Crest 6 by Tantrums — My go to for shorter races and tons of my long runs during training. Zero bounce. The bottles are 600ml vs the typical 500, I use the back low pocket for my phone. Doesn't chafe my collarbone!
Salomon S/LAB Sense 6 by Salomon — I've worn Salomon vests for years. They are light, fit extremely well and last forever. Make sure you get wide mouth bottles!
500ml Locking-Cap Soft Flask by Terignota — Locking cap. $14. Enough said