My Rikenon XR 70-150 f/4 is quite good and cost me about $60; I believe the SMC-M 75-150 has similar characteristics for a bit more. And if you abandon the idea of 'fast' telezooms, I just picked up a Quantaray 100-300 f/4.5-6.7 (Sigma rebranded); its sharpness is comparable to the DA55-300 but contrast is lower so it 'feels' soft. I paid under $50 for it. It focuses faster than the 55-300 but at longer end it can hunt due to the f/6.7 aperture; very nice in bright light but look out as the lights go down!
Two shots at f/8, manually focused on Fire Wood sign. I prefer the DA image straight from the camera, but I sure like the price tag for a 100-300 plus software to boost contrast