I usually go with Greyhound. No problems yet, other than notification of arrival. Downside of Greyhound, is the limited insurance available, however I have never needed to file a claim. There was a case few months back, posted on RCU, where Greyhound lost a model. Poof, gone.
Don't know how that case ever came out.
I have shipped 2 models with Forward Air, 1 was completely destroyed, (they stacked a crate with a machine lathe on top of it), and second was damaged by by a wayward fork from a forklift driver. F/A payed the claim on the destroyed model, and gave the remains back to me to salvage the engine and parts. That did soften the blow a little.