Hey, happy new year to you too.
Depends on your requirements. If MaxDSL is proving a problem for you, and you're getting too much packet loss, you can try to (if you have a supported router) have a play with the DMT tool. It's a German tool, but there's an automatic translation
here.
Alternatively, if you're not bothered, asking your ISP to go back on 2Mb fixed might be a way forward, if they're willing to do that. Be aware though that if your line attenuation is over 43dB BT might not accept the order.
Perhaps if you post a full copy of your line stats from your modem we might be able to advise better?