I still have a number of the 7000c they are still the best reels that Abu made, brass side plates and bearings instead of bushes, so very little corrosion only the handle needed to be replaced occasionly. Some of the 7500 also had brass side plates, but when the high speed gearing came in problems also came the spool shaft was reduced and on certain models it could bend and jamm the reel. Abu seemed to get over this problem with the 7200 but went back to alloy side plates and bushes, after that Abu were taken over and production went elsewhere the new reels are very different gone has the reliable free spool mechanism to one made out of plastic gears which if not set correctly causes the pinion to become damaged and makes the automatic free spool release to malfunction, I have had to replaced three pinions already on reels with this problem the alloy side plates are back aswell.
I have seen a absolutly mint 7000c sell for £150 and a mint synchro go for £185