First, Happy 4th of July.

Second, I know this has been discussed.

Now, I didn't use the search function b/c I see more products on the market compared to the last time that I looked into this subject.

Questions to consider:
What system do you like?
What would you change to make it better?

What I am looking for:
1) ease of filling (no spills, no messy sticky liquids all over my feet or my bike)
2) doesn't spill
3) doesn't affect bike handling
4) doesn't require you to leave the aero drops to drink
5) after market systems only (my tri bike has no proprietary built-in system)

Thanks!