What to do...

So, I have a vintage set up running a Garrard 40 mk ii through a McIntosh MA5100 amp to Klipsch Heresy speakers. Also have a Technics 5disc changer going through the same system. I inherited all of the components. The Garrard suffers from the typical mechanical issues of most old Garrards, but works fine manually. I replaced the cartridge/needle with a Shure M44-7. So, now I have the vinyl bug(also inherited about 100revords from the 1920s- the 60's. I have also purchased more of my own(love Dire Straits on vinyl). I have not listened to any higher level systems, so I don't know what I'm missing - so maybe ignorance is bliss? Or, I have been eyeing the Techincs SL-1200, and also saw some similarly prices MH mmf 5's on eBay. First, will the upgrade in table be significantly noticeable only moving up to that level, or should I wait until I have more funds(which could be a loooong time as the wife is not a fan!). And, out of the SL-1200 and MH mmf 5(not 5.1) which would be a better choice? Or do you go with the new MH 2.2 or low end Rega? I've read a lot, but just wondering in the context of my existing system what the best choice is?
Thanks!