Bulb is very very good!
The glass shape part is a bit strange...but maybe is just me (and Micha).
Maybe the famous kitchen.hdr will help you to make it even better.
hhmm..how to create your rendering like your reference image:
1) use 2 planes / (ramps like) for backround. 1 grey - 1 blue.
2) try by using only the bulb light like your last test. Increase the emitter value more...
3) where did you find this image? if you created with a dif. renderer I am sure you can recreate it soon with maxwell... if it is just a pic from the web maybe it is better if you take your own physical and photograph it - so you know exactly the settings and enviroment around.
4)...I can give a try if you like...
once again amazing lamp and very nice model...
do you mind sharing it?
cy,
Andron
http://www.ixor3d.com
VFX & 3D Anim
Renderfarm Monitor & Control Software