I can only say this about iVibe and the TFSU - bad news. I registered on their forum 1 year ago. I am still awaiting to be allowed to post on there. My emails to the webmaster and forum owner have so far been ignored.
Like many of you here I was dazzled by the promise of game immersion the device offered. So much so that I convinced other sim-fans to order the unit with me when it became availbe to order. Finally the day came (after months of "its any day soon" promises on the website. I tried ordering with Amex, Visa and Mastercard. Each time I was told there were insufficient funds on my cards (completely false). I then found out I should have used Firefox instead of IE. Same problem again. I dont know about you, but I start to get uneasy, especially when after reporting my problems my emails were once again ignored. I then managed to find and email of one of the people who does post regularly and his advice was dont touch ivibe and get a buttkicker instead, and they also added that I should have woken up to the situation by reading the forum.
I guess its easy offering free service and upgrade on an apparently non-existant product. Call me weird but I wonder about a company that isnt even concerned about a potential customer informing them that they have just lost multple sales of their product. I really wish I could rave about how great they are, but ALL the evidence I have seen points to absolute shoddy customer service and apparently no actual product.
Buttkicker for me and no looking back.