Any advice on which Contact Lenses to go for?

I have been using glasses from past 3 years.
My eye number is -3.5 for both eye.
Being a newbie, I am a bit confused for which contacts I should go for. I have shortlisted these two.(Both monthly disposable)
1). Bausch & Lomb PureVision2 HD contact lenses
2). Ciba Vision Air Optix Aqua

Any Idea which is best for a newbie in contacts

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