Yep they are pretty good, but remember these are just a guide. Its better to work it out for your self, plus critical angle plays a big part as well...........

congrats on your second place!

From what Warlock says about refractions, I came across a chart once, this is similar.
http://www.robinwood.com/Catalog/Technical/Gen3DTuts/Gen3DPages/RefractionIndexList.html

Maybe be I can help,reading through your setting author I would say that the Refraction Index are not correct, you have your glass set at 1.33 this the Refraction Index of water?

Class crown (common) is 1.52, class flint 29% lead is 1.569 and glass class flint 55% lead is 1.669. Most perfumes are made of many components but a large contributor to this is Ethyl acetate it is present in confectionery, perfumes, and fruits. In perfumes, it evaporates quickly, leaving only the scent of the perfume on the skin the Refraction Index of this is 1.3720 hope this was some help to you.

As for lighting, you can try an HDRI but I would go with luminous polygons as sources of illumination.

This is a must read for anyone working with in the world of 3D.

http://en.wikipedia.org/wiki/Snell's_law

Author, I didn't mean to offend, your bottle is a great design and sorry I didn't realise that you were using GI and AO. I mentioned lighting with hdri material as you can get a really good effect with GI. Regarding the logo, why not use the same item from the bottle on the box.
This is really great and would look fantastic with the right lighting. Cinema has lighting presets preloaded and plenty of hdri materials if you would like to use them.
Regarding the caustics I don't have a clue but have you seen this tutorial.
http://cg.tutsplus.com/tutorials/maxon-cinema-4d/an-introduction-to-caustic

I think it's pretty funny

I love it! Well done! GL!

ha ha I didn't even notice that author until you said it (man/woman) I found it a little funny even before I saw your comment

Have you tried adding a sky object to the scene and adding a hdri material to it and render with global illumination? Have you tried Ambient Occlusion?
Check this out you might find it useful.
http://www.amateurmedia.net/create-hdri-in-cinema-4d/
and this
http://greyscalegorilla.com/blog/2010/11/what-is-linear-workflow-and-how-can-it-help-your-renders-look-better/
and this
http://greyscalegorilla.com/blog/2011/03/how-to-optimize-your-scene-to-render-faster-in-cinema-4d/
Oh and one nitpick, your logo on the bottle doesn't match the logo on the packaging

yay, another neg point for me...........

some people have a very strange idea of funny............ you wouldn't think it so funny if you fell down one of these holes because the signs were not there.........

Great piece author...very imaginative and effective...well done

Nice work author...best of luck

Be nice to see more of the perfume in the bottle... apart from that good work..GL

oh boy! you better not let Josh see these being burnt up and not smoked! LOL

Very cool work! Thx for the SBS! I would have never figured out how you did this!

Nice, but a little hard to tell they're letters

Congrats

Congrats on your win

Very cool work, I love playing Mario games when I was a kid = )

Congrats, wonderful work

Holy moly, this is cool! I never played that game (jumped right into PacMan), but it looks like you've brought this one to life - awesome tongue!!

Very cool level author...

I would love to play this level

This is great! Chain chomp will always cause a ruckus!

very nice!

Excellent = )

Awesome, it looks like a light shower. Good luck !

Congrats on your win

Congrats on your win

Well done, not an easy photo to take.

very very nice capture author...gl

Congrats for 2nd

Nice Job Congrats

I voted 100 cause it has only 400 views but it deserves a hell lot more, so i hope it wins!

great stuff...well done

This is WOW...

perfect...

impressive !

I think this is a subject very well chosen!

bello

very very cool work author...IMHO lover lens flare circle create small distraction from main object...everything else is great...gl

bravo
i voted hight, but the step?

Great spin on this one, looks really cool = )

Amazing looks so so cool = )

Thanks!

Great work! Great photo for this filter!

I really liked this filter! How do I find it in photoshop?

simple, but yes, nice tones and framing

Love it, the image goes well with the use of that filter