Delta X5 - owned it for about 14-16 months. Bought new
Like: runs smooth, pretty quiet.
Like: Nice long fence. rack+pinion, easy to adjust.
Like: power switch mounted high.
Like: with a DC I have virtually no dust.
Like: the enclosed base is solid, and fairly compact (I think the open stand bases take up more space)
Like: the tables were flat, and I did not need to do any shimming.
Like: for a 6", it has a pretty long bed. (I think GI has a longer one, but costs much more)
Issue: Had to fiddle with the motor position when I bought it, as it
was not aligned the best.
Issue: I had one pin fall out of the fence, but quickly replaced by my local store.
Issue: It has levers for adjusting. Sometimes I think I'd prefer cranks/dials.
Issue: Stock blades were not great, and quickly dulled. (knicked even, after I ran some SYP through it. I've since learned that those pin-knots in SYP can be VERY hard) So count on buying some better blades right away. It's good to have a second set anyways, so you can have one set available when you send the other set out for sharpening.
Other point: some brands come with built in mobile bases. However, in my small shop I want bases with four swiveling wheels, and ALL built-in mobile bases are 2 fixed + 2 swivel.
Summary: None of those issues were big deals. I'm happy with my purchase. Suits me, and suits my current shop size.