Do you say it from your own experience?
Yes (I wouldn't say it "second-hand"!).
It's one of these (many) issues in trading about which there are two hugely different consensuses of opinion available.
If you ask the enormously large group of aspiring forex traders who are struggling, undercapitalised, overleveraged, have unreasonable expectations, are getting all their "information" from each other and from people who want to sell them things, are permanently struggling, and are not making steady profits at all, the consensus of opinion you'll hear is "Use MT4 because it's what we all use, and there are loads of EA's and backup and support for it".
If instead you ask the extremely tiny group of people who are making a living from trading, then the consensus of opinion you'll hear is "Don't touch MT4 because it's a horrible pile of crap".
Of course, the first opinion is the one you'll nearly always see represented online, because of the relative weight of numbers of the participants in each group. But it's still nonsense.
