They seem to be decent lever guns for the money. Following is a Gunblast review on the Rossi 92. Steve Young: Rossi Model 92 Specialist
Considering that Marlin isn't currently building the 94 in 357 Magnum, it's about the only game in town. BTW, Sports South (a distributor) is currently showing the 20 inch version in stock.
As for the Puma, it's currentlly imported by Legacy and built by Chiappa in Italy. In another Gunblast review they tested a Legacy 92 in 454 Casull and one nice feature of that gun was that it could be loaded by either the side gate or by pulling the magazine follower and loading the tube directly. I would consider this a real plus because it means that unloading the rifle doesn't require cycling a full magazine of live rounds through the action. However I could find no mention of this feature on the Legacy web site.
One other thing to remember is that all of the lever guns were not truly "drop safe". When they were designed a half cock position was the only safety feature incorporated into the design and a hammer fall from half cock could cause a "sensitive" primer to ignite. As a result, you want to be VERY familiar with the features of your specific choice and NOT carry with a live round in the chamber unless it incorporates a true hammer blocking safety mechanism. The Rossi has a hammer block, however it's a bit of a kludge and I wouldn't rely on it.