USB stick with write protect switch

[#1]

Does anyone have a recommendation for a good quality USB stick with a physical write-protect switch? I'm looking for 8GB to 16GB sizes.
I get computers brought to me from time to time with various "faults". Most of them can be diagnosed with a Ubuntu live USB (e.g. checking for bad sectors, fixing the disk structure when CHKDSK has decided to "save" the Windows directory by putting it in C:\found.000 etc.). It's nice to have the peace of mind that my USB stick won't be infected with whatever malware may be lurking on the system (e.g. if I miss the F11/F12 select boot device prompt and it boots into an infected Windows installation).

[#2]

http://www.ebay.co.uk/itm/IMATION-Swivel-8GB-8G-USB-Flash-Pen-Drive-Write-Protect-/260938471691#vi-c...

[#3]

Thanks.
I have the 256MB version of that Imation stick, bought several years ago and still working perfectly (although the swivel part has long since fallen off and the main body is held together with electrical tape). I never thought to search for a larger version of it since I assumed the design would have been discontinued years ago.

[#4]

Well, another option is to use a small SD card reader, as SD cards have a write protect switch on them.