I know this is a zombie thread, but it popped up in my Google search results, so I thought I'd add an update.
"I wish there was another forum user who has been using Benfotamine longer than I have, who could give me some feedback."
I stopped taking Benfotiamine a few years ago, after taking it for 8 years. It didn't do well in 3 human clinical trials (the Groningen, Melbourne and Oslo studies). Thiamine supplementation was found to provide benefits, whereas Benfotiamine was not. I took it as a preventative against complications - I don't have painful neuropathy so can't comment on its effectiveness there.
In a 2010 article by Thornally & Rabbani, they stated:
"Dissimilarities in the effects of Benfotiamine compared to Thiamine are as follows:
1) Failure to correct dislipidaemia in experimental diabetes;
2) Less effective at decreasing exposure to the major AGE, MG-H1;
3) Loading of tissues with TMP.
The latter feature may underlie the decreased effectiveness of Benfotiamine as high tissue levels of TMP inhibit TPPK."
So, just a warning to people who may come across this thread - you are probably better sticking with high dose Thiamine, rather than Benfo. What scared me, after reading the above, was the chance that I could be making matters worse due to point 3).