Absolutely, Mark. There are so many more quality options than some would lead on. I bought a 2109 son last year and my results were the much the same as Lucky has stated having w/ 2109 himself-- calves come slender and grow well. I have some really nice heifers from him too. Good angular females that still have some substance to them. As far as the Jazz cattle, my experience has been more with using Jazz sons than daughters but IMO these genetics are as commercially viable as any in the breed. Sons like Addicted, the original Prestige at Lovings, I've had some GREAT daughters out of Maestro 35U.. so has JSF, Leveldale, and Dave Dillabo is CA. JSF Jazz Star 73U has been a great bull for me- I have 10 or so daughters and wish I had 100 more. Moderate, fertile, 1200lb cows that raise good calves year after year after year. These are cattle that that will go out and make people money on limited inputs. These sons are 1800 lb bulls, as was Jazz himself. so to hear someone say they had jazz daughters of comparable size is more of a testament to the disfunctional cows they had used him on than to the quality of jazz himself. I saw Damn Proud in Fort Worth a few years back- Id place him a little more to the show side of the spectrum than the previous sons mentioned but if that's your pursuit, then he's likely better suited than these other more commercially geared sons.
As far as the outcome from choosing cattle based on eye appeal,,, well that all depends on what the individual's eye considers appealing. IF you select cattle based on traits that have a negative correlation to functionality- hair, bone, neck extension, etc., well then of course this is detrimental. But if you're a cattleman that finds functional characteristics to be appealing, then 'eye appeal' is as good of an indicator of functionality as can be predicted by any selection protocol. Gerald Fry's "bovine engineering" offers a good tutorial on this approach.