I started on Lantus mid-December and have been using the Solostar pens. I have been titrating my dose and currently take 36 U every night. I suspect that the Solostar pens may not be entirely consistent in terms of dose delivery and was wondering about going to another type of pen and lantus cartridge. I have weeks on one pen when my BG in the morning is low to mid 6's and then with a different pen, same dose, my morning BG's are mid 7's. My diet is consistent and i carefully refrigerate the pens etc. Just wondering if anyone would recommend the pens and cartridges over the Solostar in terms of dosing accuracy and consistency ?