The trading of molds between companies is very vexing for me as well, thats why I spend more time these days researching the origins of "new" kits than actually purchasing them. The manufacturers have created a real spider web for us hobbyists to cut through.
As an example, in the past year, Italeri released a 1/72 F-8 Crusader. I didn't buy it, but I saw it in the box once and I swear it was the Hasegawa kit I built 15 years ago. Not a bad kit, but still some honesty would be nice.
I think price has to be an issue in what you can expect a kit to be straight from the box. I've noticed the price differential between Italeri and Hasegawa kits where I am is much greater than what's been mentioned further up in this forum. Both Hasegawa and Italeri currently have 1/72 F-111s on the market, I know the Hasegawa one is a reissue of their FB-111 of the mid 80s made to look like a current RAAF F-111G. I suspect the Italeri kit is also a reissue of somebody's kit.
The Italeri kit is around 20 to 25 dollars Canadian while the Hasegawa is flying around 45 to 50 dollars Canadian. I have the Hasegawa kit on the go and they didn't change anything but the decals from the first release of the kit as an FB-111. Thats a steep price to be paying for a reissue that essentially hasn't been changed or upgraded in any way.
To Italeri's defence, I can say in the past few years that I've built their 1/48 Eurofighter and the only complaint I could make is that the cockpit consoles are all decals. Not only did I have no fit problems, I didn't even need filler anywhere!
I built their 1/72 T-45 Goshawk a few years before and can say its a real gem of a kit. went together like a breeze, I'd built it again anytime.
I've never built their 1/48 Panavia Tornados, but I've known folks that did and I've heard nothing but glowing remarks about them.
All the mold trading requires a different approach to kit purchasing than good old brand loyalty. Its getting to the point where I wish Consumer Reports would start putting out a modelers version of their magazine.
Shopping around is a must and research into the kits we might want before purchase is also getting to be a must. Dig around enough and you'll find out if a kit is really new or a reissue quietly making its way back onto the market under someone else's label.
Italeri is no more guilty of making a crap kit than any other Western manufacturer. I've built kits from the likes of Hasegawa that have given me fits and almost made me want to swear off the brand. With all the mold trading, the brand mark on the box is getting irrelevant, it could be anybody's stuff inside.
Don't shoot the (most recent) messenger