i have the 5 LED Matrix bulb from www.autolumination.com (look in the section for 168/194 bulbs) they work great, ive them in blue and they fill up the horn very nicely, they have a new bulb that ty (forget his online name at the moment) was telling me about and they looked like they would fit.. but i dont think anyones tried them in the VX yet, they just came out a few days ago