I've mostly used Tiger Teeth for frost work. They give good penetration for that, and they work good in hard ground too. Not much good in rock, and the wear life is considerably shorter than a regular or long shank tooth. Where I'm working now, the company is using Tiger's on both Cat 345's with 72" buckets, and a Volvo 330 with a 54" bucket. Most of our material is fairly soft, but there are some reefs of very hard rock too. The Tiger's tend to break off in that stuff. Tooth life has been poor in general.
I've had much better luck with the side retainer and pin (Cat) than with any other method of tooth retention. The top mounted pins are somewhat easier to remove and install, particularly on excavator buckets, but my experience with them is that they tend to push out easily on their own and you suffer tooth loss. The ESCO horseshoe retention system isn't all that great either. They tend to come loose and break, which means they are a real SOB to remove then. Any retention system that uses a rubber keeper of some kind is trouble.
If you lose a tooth and keep running, you got trouble, as a new tooth on a worn shank will wiggle around like an eel and won't stay put very long no matter what system of retention you have.
There is a nice tool available to assist in getting side pins out, last one I bought was about 22 bucks. I think I still have it. I remember one 992 bucket that had extra shanks welded on that forced me to remove three teeth on either side of the one I wanted just so I could get a long driver pin in to get that one tooth off. First time I did that, all I had that would do the job was a nice hardly used Snap-On 32" extension. It came out sorta beat up, and I soon had a regular drift pin to use instead. That was on a Kiewit job in New Mexico.