also worth consideing changing to HIDs if you just want better lighting, well within your buget, if you cant get in touch with BTBR try Les Wasall over Cheshire way, think he is the norths answer to BTBR.
I have HIDs in both dip and main to enable me to see and micro de's to be seen, you are welcome to come over to Blackburn to look at mine if you want,
B