I think what it more comes down to is expectations and budget. When I first got to looking for a machine one of the older heavier Boss' came up for sale local to me and I bought it. That machine IIRC was between $9-1000. I'll be the naysayer and recommend you save or stretch for a lower end adler clone such as a cowboy or small cobra which start in the $1500 range.
With the Tippmann you cannot work a project with both hands while stitching (obviously). This may not seem like a big deal but on small projects especially it can be a big help. I did it with the Tippmann, I do it better with the Cobra.
As mentioned above the timing on the Boss is a sore subject. Mine would fall out of time sitting there, so you always have to do test runs and tweaks before running the machine even between back to back projects. My Cobra can sit for a month and still be right where I left it. I can't explain how frustrating this process can be and it wreaks havoc on production (doesn't matter if this is for fun or for business, time is money). I even sent mine back to the factory to have it gone through thinking I was either doing something wrong, or something was worn out. It may have just been that machine but it was an awful big headache for me.
The biggest thing I ran into is parts breakage, but it was a used older machine so that is expected to some point. The gear on the handle that drives the whole thing I broke twice. I sheered the cable for the presser foot, and had to modify the machine to fit the new style which has a solid metal curve so that it shouldn't break. I'd have a lot of small things go wrong but you get good at fixing it with time. I've had one part on my Cobra break which was the needle carrier, and they overnighted me a replacement free of charge where as all the Boss repairs are out of pocket. It needs to be mounted to something very sturdy even if you make a base you can clamp/unclamp from your main work bench as movement can be harder on you and the machine.
My last thing is not really a 'thing' til you see it but the feeding action of the boss can and usually does do a number on the back side of your project. That may not be an important consideration, but if you poke around on here and look you can usually see what's hand stitched, what's on an Adler or clone, and what's done on a Boss.
A budget is a budget and I understand this probably won't change any minds but I sure wished someone had saved me the hassle as an electric was worth the investment for me due to the low amount of hassle it provides me.
