Or else they couldn't be fucked responding to your question!
Anyway, I have a 40lb Xvest and love it! Use it regularly with my cardio - walking and elliptical. Also use it for sprints and bodyweight exercises.
Like anything, you pay for what you get. Yes you can use work arounds and buy cheaper products but the XVest is Quality with a capital Q. I spent quite a bit of time researching before I bought mine and everything I heard about the Xvest was true. It is adjustable, fits snugly, the weights are tight and there is no discomfort. As yet, the velcro straps have shown no signs of wear. I had tried various types of vests over the years and it stands out a mile.
John Davies was also a decent bloke to deal with and went through some extra hassle for me to get it to Australia.
So yes, I'm glad I bought it and yes I still use it (had it for about 8 months). I would like to get an 84lber in future but the cost of postage to Oz would kill me!!