I believe just like most say here you pay for what you get. When I bought my suit, I was looking for things... Such as fitment, quality, reputation and price not so much, this is my skin we are talking about, some things are not replaceable. First thing I really did was is, asked my self what are the pros wearing, you see some of them guys having a get off at 120mph+ sliding down the track into the dirt, and get up an walk away just fine, with some scuffs to there suits, so i was like what is he wearing???? I look around at motogp, afm or whatever... an see things like alpinestars, dinease, helimot etc. I didnt see no frank thomas. I went to the local stores an got a hands on feeling for the all these suits, and honestly frank thomas felt the cheapest in quality. They where nothing like the alpinestar or dinease top suits. But then again its your skin and what you feel comfortable in, peace of mind comes a long way when your riding. But like some one above said, if you are on a budget, some leather is better then no leather, i dont recommend going out an riding in jeans an sweatshirt at all.
You are asking mfor my opinion and I have given it.
I am sorry if it is not what you wanted to hear. Both Astar ad Dainese put a massive amount of money into research and I have visited the R&D deptments of both companies. Frank Thomas do not have this same ability and commitment that I have seen from the other two.
If you are asking if I would put my own money on the table to buy Frank Thomas then the answer is no. I do not feel as confident in their product as I do say Aplinestars.
Andy