FWIW, what I did was buy the 101N & then take my 101 to Auto Air Marine Electric in El Cajon. they rebuilt my old one. mostly they just took it apart, inspected everything, replaced some contacts, cleaned it all up & I think they did something to the motor, but I dont remember exactly.
I did notice that the motor on the 101N is larger than the one on my 101. it sounds like it cranks it over easier than the 101 did, however it does no crank but for a second before it fires up, so its not like it was laboring in the first place. the piece of mind for me is worth the extra few bucks.
to speak to
@Jtmoney714 's question, Years ago, we used the Tilton on a twin turbo SBF in a drag car & it was great. Ive never used a Meziere starter, but have used a bunch of their other products & they were all great products. Also we used the MSD starter in our 903/942 nitrous motor & we beat the crap out of that thing every round & it was a rock star.