I think the AT440MLa would be the upper limit of the Debut 3's ambitions - spending any more would be a bit risky. If you are interested, Mantra Audio in Selby may have some old priced stock (circa £90). Very detailed, very accurate tracker; fine trebls and bass, good mids - I can;t fault it to be fair, but you need to like upfront and in your face. Forget warm and fuzzy analogue sounding...!
Failing that Denon DL110, Goldring 1012GX, also their 1006GX, Nagaoka MP11, Glanz MFG-11T if you can still find one...Goldring Elektra, all decent, and at various prices up and down the budget. Starting from around £20.