Dude, a Duo2 SE is £15. It is a new, very safe solution, and if you're good at soldering, you can fit them very, very easily. If you can't solder on a small scale (and we are talking SMALL), don't bother trying, and get someone else to do it for you.
The Neo might cost about £2, but they're sh*te - I can't believe you can still buy them

- and yes, the NeoAsics all burn out your laser...