A few things to keep in mind.
Not all places that you think are UPS or Fedex, are UPS or Fedex. Many are independent stores that will charge you a premium over and above what the actual shipping charges are. I have received packages that were damaged and UPS or Fedex claims they were improperly packaged and would not pay the claim. This really sucks when you pay that independent store to do the packaging, and they won't take responsibility.
The triangle boxes from UPS and Fedex are very good boxes, but the ones from USPS are a far cry from good boxes. They will absolutely need some extra protection like the pcv tube inside.
USPS claims are a nightmare! I won't even insure anything with them anymore. I use a third party postage and insurance provider just because of that.
Priority Mail does not have tracking. It's actually called Delivery Confirmation, and it usually doesn't show until the next day. If they did have tracking, I would ship USPS.
UPS will automatically deny all claims. Usually it's because of Insufficient Packaging or Padding. When you push the issue, they will "submit for an exception" and it will then pay. Be prepared to ask for a supervisor!
Pool cues are tough for the conveyor systems because they are long and narrow. They get caught on the sides of the conveyor systems and basically become a "Dam" with all the other packages piling up behind them until something gives.
Most "High End" cuemakers and cue sellers use Fedex. The reason is that Fedex Air is a totally separate system than ground and they feel the cues are safer with fewer packages going through the same system. They always overnight the expensive stuff.
I tried to get a Fedex salesman to come by my business and give me a quote for over 2 months. I can git a golf ball to one of their facilities, and they would not send someone to talk to me unless I already had an account. This was Stupid! I use UPS instead. I really only have a handful of claims a year even though we ship quite a bit.
Both UPS and Fedex are really expensive for anything out of the US. I almost always use USPS, but the insurance thing is a pain. I use a third party for this.
Always us USPS to ship to Canada. The USPS gets a pass due to NAFTA and it doesn't have to go through a brokerage or something. I have seen a $50 brokerage fee on a $5 item when shipped with UPS.
Anyway, that's just a few things I have learned over the last few years about shipping pool cues around.
I hope it helps!