There's plenty of great quality figures to choose from.
So what you're asking, based on the info given, is hard to provide an answer for.
If you can throw out some characters you may be interested in (eg. Devastator, Ironhide, anyone from first year G1) and/or styles (eg figures that fit into Classics displays, figures that fit in with MP displays) we'll be able to start giving you some actual opinions with some weight behind them.
Looking To Buy Either Siege Or Earthrise Ratchet, and Buzzworthy SS86 ER Cliffjumper.