So I'm thinking of getting one installed in my '07 Nissan Sentra cause its the base model which does not include the option of keyless entry..

I was wondering if anyone has any recommendations on where to get it done? I was looking on Best Buy and I suppose they will do the installation for you (?)...like the viper keyless entry system, reviews seem good? anyone know of this system or any other better ones?

and how much does it usually cost?