If you want to talk about breaking stuff on the trail, look no further than a Jeep.
Explorers hold up darn well in stock form, let alone once you start doing things with them. Both in the front and the rear, Jeeps have weak axles. And what do a lot of Jeepers upgrade too? The 8.8 rear you have in your Explorer. It's a misconception that Jeeps are ready to go right out of the box. "A," no vehicle is ready to go right out of the box. For the most part, people buy Jeeps thinking that bam, they buy it, throw on something other than 215/70R15 (not usre of the exact, but it's not good) All-seasons and they are set. You throw bigger tires on a stock Jeep and go wheeling, forget about it, you'll break something. Jeeps are a little smaller which can cut back if you are looking to something more practical.
What suspension components have you broken?
A Jeep, just like any vehicle (Including Explorers) can be made into a good performer. Depending on how far you want to go, some more than others, but for the most part, any and every vehicle needs some work put into it.
Landcruisers are nice and they have a pretty good V6 (Pre-98 with the solid axles), but it's a V6 in a practically 2.5 ton vehicle. They have a lot of size to them, which can make for some difficult manuevering on the trail. When wheeling, you want to take as many "I hopes" out of the equation as possible (ie "I hope I can clear this, I hope I can fit through that, I hope I'm not too wide for this"). And the more weight a vehicle has, the greater the likelihood of breakage.
Blah blah blah..... Essentially, nothing is perfect and if you want to make a real off-road machine be prepared in any scenario to spend more than $8,000.
I'm not usre who told you $8,000 because
FABRITECH said they were looking for a prototype Explorer to make a kit for and that it would cost $1,900 + cost of the axle.
Nothing's perfect, everything has costs versus benefits. Choose what you like and enjoy.
I like the Explorer because it's something not everyone expects and a surprise when people see it actually can perform. Yeah, IFS is a limitation, but the way it was designed (A very long lower A-arm) it can do rather well. You get the best of both worlds (on and off road) and it has some great, all around utility. I can always make it into something more if I want to, but overall I like the Explorer because it's a great sleeper and a surprise when it performs.
Hope this helps and let us know what you think you might do.