I built AMT's Tupolev Backfire C several years back.
Its typical AMT fare, the plastic is a touch too soft for my liking, the decals are well printed but useless as the adhesive doesn't stick to anything and they just shrivel up with any sort of setting solution. If you attempt it, a lot of scratchbuilding is in order and there's gaps a plenty to fill.
It does, however capture the general outlines well and it does make quite the conversation peice due to its size.
With any luck at all AMTech will take the molds for it and really make it into the kit that it should be as the information available about the aircraft now is ten fold what it was when AMT first released it in the late 80s or early 90s. I keep hoping.