There's tons... RXW does a series of slightly controversial (or at least as contorversial as a watch can be) models that definantly at least draw some design elements from Panerai, for instance. Great watches by all accounts, with a much lower price tag, although maybe harder to find now. The MM20 is probably the most like the classic Luminor Marina, and its been out of production for a few years now, I think. They also have a new one thats a dead ringer for the Radiomir's, but I can't for the life of me rememebr the name. Maybe check TZ and the Big Watch forum though, since they go through fairly regularly there. There are a few mainstream companies that offer similiar peices to Panerai, specifically Bell & Ross, Anonimo, and Enzo; the problem there is that the former two are nearing the same price point as Panerai, while the latter is a fundamentally less attractive peice of work. There are also RWC and IWI (again, hoping I have the names right) "homage" pieces of many Panerai models, and countless panerai fakes out and about from China. Really, the only peice thats easier to find a low rent version of would be the classic Submariner... which is funny, sicne of the course Panerai themselves are derived from a Rolex model from the 50's...