Hi Mark,
I was in the same position as you a month or so ago, near the time when DeWalt and Delta parted ways. After CONSIDERABLE research , and coming within a hair's breadth of buying the DeWalt, I opted for the Delta from WoodWorkers Source instead. Unfortunately I've temporarily run out of "round-tuits" and so I can't personally offer feedback on actually using the saw :embaresse. Anyway, here is a synopsis of the logic (?) that went into my decision; maybe it will be helpful to you.
First, I tend to shy away from used because tool repair is not one of my skills and I know it. So...on to new: Quality, features and price brought me to the two "D" saws. Researching the corporate split led me to believe DeWalt was focusing on power hand tools, things that would be used hand-held, i.e. circular saws, drills and such, while Delta was going to focus on "shop" tools, i.e. table saws, drill presses, band saws and of course, scroll saws. My understanding, which may or may not be correct, is that the DeWalt Scroll Saw, while identical to the Delta currently, will go away when they run out of yellow painted saws. IF ANYONE KNOWS DIFFERENTLY, PLEASE CHIME IN.
Aside from that, Delta has a 5 yr warranty to DeWalt's 3 yrs and that is always significant to my way of thinking, PLUS the Delta came with the stand and light that were optional on the Dewalt. Think I've said enough - can you imagine if this was the full version instead of just the highlights?
Being that you're new to this just as I am, I'm sure you will be happy with whatever you choose, as everybody has their own reasons for choosing the tools they want:icon_thum. Good luck to you - maybe we can compare our first scrollings.