Tamiya and Fulimi have raised the bar so far, the old kits can barely remember it, much less see it.
It would be fair to call Heller "French IMC" 'Expedited' builders will find they do not lend themselves to rapid assembly.
Still, they cover subjects no one else did.
Choose your subjects wisely, and take your time. I'd be pressed to take a Heller OVER a comparable late model kit, but there are still a few I'm itching to get after, like the 512 Ferrari...