The DL-160 (and the very close one model down DL-110) are a very pleasant and rich sounding cartridge.
Only (minor) gripe is no removeable stylus-when the stylus is done, you Toss the whole thing out and buy a new one.
The AT-440MLa? I have owned the previous model, the AT 440 ML and a few AT 440 MLas. A bit more detailed and perhaps hotter than the DL-160. Good for certain records that appear a bit dull, and seem to extract a bit more detail.
The negative? Can sound a tad bright at times on some records, in some systems. However this diminishes as the cart breaks in, and remains in high regard.
A monkey wrench- my friend Mike swears by the new MM Ortofon line; the Red and Blue he says are exceptional.
Of course I imagine the Bronze and Black to be heavenly, but the caveat there is it will show any weakness in your system and at $389 up, that'd be a shame. You need gear that really is set up perfect and of very high quality.
For most folk he says stick with the Blue and Red for 80% of the performance of the Black and Bronze with a more forgiving presentation and easier pairing with gear.
I have not heard these, but trust Mike's opinion.
A wildcard not mentioned yet is the Grado Gold. A fine sounding cart with a warmth to vocals and woodwinds and tenor sax that could melt butter on a cold Thomas'es English Muffin. Downsides? The creamy warm sound may not suit well in dullish systems or folk who want to eek out every nook and cranny of detail at the top end, and although it tracks well, extremely challenging records may present, well, a challenge-but only in the hardest of passeges (say, the TelArc 1812 Cannons).
The winner here? All of them. All these carts are fantastic, and it comes down to fine tuning in regards to your ear and your system.
I feel lucky as I own all of them (except I own an older Ortofon model) and all work extremely well in my system and all are pleasant to my ear.