I really don't understand arrow spine too much and trying to choose an arrow gets more confusing to me when you can look at 3 different manufacturers charts and each one is a different spine recommendation. So here is my set up, Bear Venue with 50 lb limbs, maxed out. I don't know the exact poundage it is maxed out being I haven't had it checked since I worked up to getting it maxed out. Draw length is 26" I am looking at Gold Tip arrows and they have 2 different charts for different IBO speeds. My Venue's advertised IBO speed is 330 fps. Whether or not I am getting that, probably not. So I am unsure which Gold Tip chart I should be going off of. So my question is, which spine do you recommend for me? If I follow the their charts, one chart I fall under a 500 spine, the other, 400. Also, what length? My current arrows the shop cut them at 26 3/4" from throat of nock to end of shaft. The help is appreciated.