I don't know that I'd recommend a thicker recticle, my advice would be getting either an illuminated recticle scope or getting a recticle illuminator for your gun-I've used one in the past-I forget what make it is, it's the one that cabela's offers, it worked very nicely-I was afraid it would just shine the inside of my glass, but it worked just like they said it would.

Getting thicker recticles only takes away your accuracy and may not necessarily help you with seeing it in low light-afterall, it's still a black line, thick or not...illuminators can be turned on or off, so you've got a black line in the day and a yellow (or red) line at night.