MarkL,
The 1MHz span spectrum on your Agilent looks very similar to what my PLL puts out, I have attached a side by side pic, and also blended the two images together, it can be seen they are practically the same.
Also did a close in over 50kHz span, yours was over 30kHz, fairly close span. I used the minimum 1kHz RBW available on my SA. Your Agilent has a better roll off, mine has better (no) spurs close to the carrier. I must say I used a good TCXO oscillator with a low phase noise, I do not count beans when it comes to performance.