My question is, do I "need" to add a santa maria grill to my charcoal grill arsenal or is it six of one, half dozen of the other? I understand the different cooking methods, just wondering if the final product differs that much from one to the other. Thanks in advance for your thoughts!
Welcome, and thanks for reaching out to us for feedback! To answer your question, you don't "need" to add another grill to your existing lineup unless you feel you absolutely want to.
A Santa Maria grill used for live fire wood cooking will impart a wonderful flavor to the meat you're cooking, and they are built to withstand the high heat that wood embers will generate in the firebox. They also have a lot of grilling space, and can feed quite a crowd if you have a larger model. And, the ability to raise and lower the cooking grate is a huge plus. If you like tending wood fires, that's another plus.
That said, I can get nearly the same exact flavor profile using oak chunks(Not chips) while cooking indirect in one of my kettle type cookers. This is the reason I sold my Santa Maria grill - i really didn't use it that often as we aren't usually cooking for larger gatherings and I can get the same result from another cooker.
I have owned nearly 20 grills and smokers in the last 15 years. Many are gone, and some have stayed. My perspective on different grills and smokers has evolved over the years, and some cookers I absolutely thought would be life changing, like a kamado and egg were sold because after the novelty wore off, they didn't give me anything I didn't already have. On the flip side, there are many folks here whose eggs and kamados they wouldn't ever be without. It's all completely subjective, and only real-life experience can truly answer your question.
So, if you have the space and the $$ to add another grill to your lineup, you can always buy a Santa Maria and see how you like it. If you love it, you'll keep it. If you don't, you can always sell it. There's only one way to find out!