I also recently switched from Freestyle lite to One Touch, and started using the Link meter w/MM 523. I liked Freestyle, but changed due to insurance.
I compared FS to One Touch and found them comparable (within 5-10 pts) when under 150, but larger differences with higher BGs.
At about the same time, I switched from Humalog to Novolog (also due to insurance), and had to reduce my basal and bolus doses. But it was based on my ability to 'feel' low when < 70-80 (Freestyle), and I found the One Touch was about the same. So I think my changes in dosage were more related to the switch to Novolog.
It's been 4 months now, and recent A1C was about the same as before the switch, and BG averages from both FS and OT were about the same. But if you have higher BGs, you may find different results.
I had also compared FS to Accuchek Aviva, and found 20-30 pt difference in the range 70-140, so chose NOT to switch to that. But OT and FS were pretty equal for me. But I do miss having a smaller sample size !