I have and shoot a TF89 in .22 Calibre. Have a nice 6x scope on it. The wood is real nice looking with nice checkering on it. The metal work is nice and the blueing is also. Compared to the RWS Diana Model 48, it is not as nicely finished overall. Compared to the RWS350 we recently got, it is not as nice overall. It is also a few hundred dollars less expensive.
Compared to the Evanix Blizzard in .22 Calibre it is not nearly as nice overall. For all the longer shots I choose the Blizzard in a heartbeat. Nicer, more accurate... especially at 30 yards and further. Add in I really like having ten shots with just a cock of a side lever and it is no contest as to convenient and fast follow up shots.s
Both the Blizzard and the TF 89 have gotten one Coyote this spring. LUCK was involved in that both animals were taken in the 'sweet spot' for each rifle. 40 yards with the Evanix, 20 yards with the TF89. Both one shot kills.
The TF89 is accurate enough with the 6x scope that red wing blackbirds at 20 yards are generally 9 out of 10. Wind and hurrying play a factor in this. At 30-40 yards it is probably 6 out of 10 with a clean kill. The others are misses or a clipped feather. A body shot nails them at that distance but my shooting isn't quite what it could be. More practice and maybe a better scope will help there. The Blizzard is deadly at that range with a 9 for 10 being the usual result. The 10th is proabably me but a flier pellet could be the culprit also.
The TF89 is a pleasure to shoot. The one we inherited from the friend who purchased it and left it to us on the farm said it was tuned before he bought it. The Diana Model 48 was Turbo Tuned by "DaTuna" before our friend left it to us here on the farm when me moved back to town for more easily accessable medical facilitiesss.
To just take one in the field, springers... the TF89 is equal to the Diana and maybe a better choice with it being .22 Calibre and so nice to shoot. I like the Diana but the TF89 is just a bit more shooter friendly. With the stock, the chekering and finish it really looks good too. (I'm sure the birds looking at the pellet coming comment on how nice the rifle looks just before LightsOut... ;-)
Just be aware I have NO exerence with the great majority of Air Rifles out there. Most of my experience is with those named. A short time with the Blizzard comparing it to an AA410s in actual shooting and a short look at a Marauder. In springers, just what is listed above and if our TF89 is even close to typical I would buy one in a heartbeat over most is what is available for double the price. A lot of power and a low price in a hard shooting and accurate springer.