Ultra TLE was mine.
SD - Remington Golden Saber preferred, several Federal JHP LE versions all ran fine.
Range -
Everything worked. Remington bulk, Remington JHP, WWB, various Federal LE editions, Blazer Brass, Herter's, Speer.
I did not experiment with steel / aluminum / reloads / reman.
I only tried one box that was less than 230g, a Winchester flat nosed, that worked too.
Get some extra outer springs for the recoil spring assembly. They don't last long (400-500 rounds at best). The slide will start slapping a bit (hesitation and uneven slide return) when they weaken.
I had one WC mag, and it didn't hold up well. (Different from the full size WCs which have held up well). It developed wear ridges on the surface of the follower, and the follower had to be replaced. It is the only mag that has given me issues. My spares were Kimber Tac-pro. Easy to disassemble and clean. Kimber runs buy 3 pay 2 discounts a few times a year.
All past tense, I've had to give mine up because of medical issues. But it was one of the best firearms I've owned.
Put about 3k rounds through it over a couple of years.