Scott
Since I have both the LNL and a 550 and loaded thousands of rounds on my hunting buddies 650, I am not angry or upset, as I tried to rationally answer your question.
an apples to apples comparison of the LNL AP and Dillon 650XL. I'm thinking this list is about as close as it comes for changing from caliber to caliber.
Here's the scenario; change from 9mm with Power Pistol to 40 SW with Titegroup. Run-to-run. Everything set from the last time I ran 40 SW.
Please note: no die prices are considered because of the wide price variations. All prices listed are from Graf’s and are rounded up to the nearest dollar.
With the 650 set up for 9mm & PP, and you wish to change to 40SW w/Titegroup without altering the settings of dies and PM as you switch back and forth, you have only one choice: get a Quick Changeover Kit (Toolhead, TH Stand and Powder Measure $96 ea), a Caliber Conversion Kit (Shellplate, locator buttons, powder funnel; $74), and Low Powder Sensor $43 (I cannot find a $68 model at Grafs but will use your price).
There is a lot less expensive method for the 650. The dies can be locked at their settings and switched. In order to NOT BUY a new powder measure, the powder bar can be permanently set and replaced with new slides costing $29 per slide. This conversion method takes longer but you only have to buy the Conversion Kit, to accomplish a "Slooow Caliber Conversion".
With the LNL AP,
NO new powder measure or parts are required, but you must have the proper powder thru expander for $9. I am presuming that the powder is emptied from the PM after every session. This is what I do on both my Dillon and Hornady. To remove the Hornady PM it takes a turn of the wrist, dump and replace in less than 10 seconds. You can buy powder rotors, which take about 5 seconds to switch in the PM, and you have a choice of a non-micrometer insert for less than $10 or a micrometer calibrated insert for $30. If you are going to set/forget, then the non-graduated is in order. I prefer to buy one micrometer rotor, set and record the micrometer reading for each powder, and dial in the proper load each time. Very little time involved, and very repeatable.
650
Quick Changeover Kit (Toolhead, TH Stand and Powder Measure $96 ea) and
Caliber Conversion Kit (Shellplate, locator buttons, powder funnel; $74
Low Powder Sensor $68
Total $238
LNL AP
Shellplate $30
3 Die bushings $11.10 (10 pack of QC bushings $37 ea)
no powder measure necessary
Powder Thru Expander Die for PM $9
Pistol Rotor $10
Total $61
upgrad to Micrometer Pistol Rotor $30
Total $81
Good Shooting!