I need some advise to start my search

Take a look at this thread I started recently, I have a list with links to zoomies I’ve been looking at recently:

Although it’s way over your budget for this the Fenix FD40 may be the only zoomie with a side switch, at least I can’t think of any other.
And there aren’t many low price zoomies without blinky modes.
_

I agree with Alcius, I think the Convoy BD04 may be the best option for you:

  • Price under $21 (with 15% BLF discount)
  • No strobe or SOS if you chose 3-mode (mode option 2)
  • You can choose your preferred tint color
  • Looks like a metal on/off mode switch on the tail
  • Fits protected or unprotected batteries (flattops)
  • Has built in USB charging, if that’s something you could use.
  • Convoy is known for good quality

You can get all the options if you buy it direct from Convoy, (send message to request BLF discount) here’s a link:
http://www.aliexpress.com/item/Convoy-BD04-zoomable-flashlight

I’m seriously considering getting a Convoy BD04

BTW Thorfire also makes the BD04 but it’s priced a lot higher and I don’t think there are any options for modes or tints like the Convoy has.