It took a boutique brand to bring us air bearing turntables. It took a boutique brand to bring us low torque turntable motors. The best buy in high end right now is the Trans-Fi Terminator air bearing tonearm, $1000, and performing as well as anything costing less than a new car.
And, as @tgrisham says, try getting the president of Sony on the phone for an hour to talk about how his products might work in your system (my experience of Bryston). Finally, boutique brands are more likely to work with you to modify or upgrade their standard products. Try that with Sony.