The best LA is the one you feel most comfortable using, so try many. I have a Tin Lizzy 18ls, and though I love it to bits, I did have issues with the encoders, for 18 months, but the dealer wouldn't admit to any problems or do anything to help. Have since figured things out myself.
So my advice is - make sure you buy from a reputable dealer who will put themselves out to ensure all is well. I have since found dealers over 2 hrs drive away who offered to come to my home if I bought a machine from them. Wish they were there before I jumped in.