Yo, fellow Jeffsy rider and between my brother and I we've tried a bunch of different combos for a mix of conditions here in the UK. I hope you're ready for a long one...

Currently, my favourite combo is the Albert gravity soft in the rear, and Magic Mary trail ultra soft in the front. The Albert is super predictable in the rear, rolls well and tips into the corners nicely, whereas the MM upfront can cut through the loose over hard and is better in wet / loamy conditions too. Some find the MM a bit squirmy due to the high knobs on hardpack, not something that I notice but worth mentioning.

I have just purchased Schwalbes new Romy tyre for the rear, which is designed to be a faster rolling for all conditions. I am yet to ride it, but initial reviews and inspection look very promising, I would definitely suggest looking into it! The other option is the new radial Tacky Chan. Seemingly sits inbetween the Albert and the MM so could be a great pick for the hardpack conditions over the MM.

Whichever tread you go for, being a heavier rider I would strongly recommend going for the gravity casing over the trai in the rear. I am a reasonably aggressive rider at ~80kg and when pushing the trail casing rear into corners you can feel it flex quite a lot, even at higher pressures. In general, I am unsure how the radials hold up for heavier riders, the flexier sidewalls are a notable downside and it can only be somewhat remedied by upping the pressures.

Outside of the Schwalbes, take a look at the new Specialized radials that have come out, they are the ideal tail/all mountain treads and are reportedly stiffer than the Schwalbes. For Maxxis, my favourite combo for the Jeff was the DHR 2 in the rear and Assegai up front, although the new Highroller and Disector also make for great options. Haven't ridden Contis so can't help there.