What is the distance range that you want to use your light? For close work (1-10ft) I would recommend a light with a small reflector, tube or P60 sized (35mm head). With lights that have a larger reflector you will get a very bright spot that makes it hard to look and anything around the spot in the spill area.
A circuit like you describe in the budget range will be hard to find, if you want to make yourself a light then a driver like the LD-29 in a Convoy M1 might work (I have not done this).
A Crelant light might have a good driver, here are some from aliexpress
SD85
V6CS (C8 size)
An option out of the budget range would be the Xtar B20, reviews on this one are pretty good