I have the LS 2125 and it's a great little machine.
I only have two complaints - it doesn't have a whole lot of bells and whistles (Santa is bringing me a new machine because of that ;) ), and it is loud.
It can sometimes have a bit of trouble getting over a bunch of seams, but usually only needs a bit of encouragement.
Once I got to know it better, I learned its cues...meaning, eventually, I understood that when it made this noise, I needed to clean it, if it did that thing, I needed to change the needle or re-thread, etc.
It is very easy to use - straight forward and simple. It works, and I've never had any major problems in the three years I've had it.
I can piece with no problems, and have done some simple quilting. I bought a universal walking foot and it works like a charm. For the money, and what it offers, it is an excellent machine.