Poor write speed ob 16GB cruzer

I bought a 16 gb cruzer switch yesterday, and a I find the write speed ridiculous (4MB/s).

Just for comparison: I have a 2gb kstone datatraveller and a 4gb maxell pendrive (also entry level, also cheap) and they just provide 7-8MB write speed. I thought that a big brand like sandisk is just gonna be up to the competition.

I was wrong, waaaay wrong.