Both of them (
DL-301 II & DL-110
) have Elliptical tip, it's ok for about 600 hrs of use and then re-tip with drop of glue or it must be re-cantilevered, but for this price a better MM cartridges can be acquired with Stereohedron Tip (twice as much stylus life span and user replaceable in a few seconds).
The only benefit of aluminum cantilever is pressure-fitted diamond, when you remove pressure-fitted diamond and glue another one instead it is degradation (a typical re-tipping process), even if the diamond is new. So it's better to change the whole cantilever (can take up to 3-5 month) or to buy another cartridge (better idea in this situation with MC limitation).
The only benefit of aluminum cantilever is pressure-fitted diamond, when you remove pressure-fitted diamond and glue another one instead it is degradation (a typical re-tipping process), even if the diamond is new. So it's better to change the whole cantilever (can take up to 3-5 month) or to buy another cartridge (better idea in this situation with MC limitation).