id include amazone, fresher kv's,and rabe,at that sort of price range, at least all the bits can be got for these,
iv had 3 lelys here myself here for up on 20 years,but we had all the heavier versions and iv never being in the bed of one yet,look it ,lely have a soft name,but id chance one.
iv since sold all my lelys and have moved to 2 lemkens,but it was no fault of the lely,
im not going to answer the 12 and 3 range fully on the kuhn,but im near certain the internals in the bed are the same if not very similar,differences were tine holders and headstocks,
and then on the 3 series they went to a bigger packer,and the earlier 3 series had a different quick fit tine than the later 3 series,
but i woulnt fault a early 1 or 2 series.