There are bad low priced C&V bikes and there are low priced C&V cheap bikes, Peugeot bikes with Carbolite 103 frames and internally brazed construction happen to be good bikes. and people who tend to put them down just on the basis of them being made out of high carbon, high tensile steel tubing, just don't know what they are talking about and most likely never even rode a Carbolite 103 framed Peugeot in their lives..... I've owned two Carbolite framed Peugeots back in the 80's and despite them not being as light as my higher model Peugeots, they still are some of the best riding bikes I've ever ridden, despite their very humble place in the Peugeot model line. Most attribute it mostly to the frame geometries that Peugeot used, but Carbolite 103 seems to provide a ride that does not end up dead and heavy like a lot of other High Tensile, High Carbon steel tubing does.
Best thing to do is to try them out yourselves and hopefully your doubts can be erased.