Landcruiser 80 series upgrade

Hi All,
I've just been reading a lot of advise given in these chats and it seems pretty damn good, so if you can offer any my way I'd be thrilled.

I'm about to upgrade my 1993 80 series landcruiser (love this car, will be hard to give it up). It's lpg, is @ 400,000kms and it's time to move on.

I'm looking at a diesel 100 series 2001 cruiser and I want it to last me the next 10 - 15 years. But I'm wondering whether a prado might be the way to go? They're certainly cheaper but are they just as good? I need to pull a small jayco and be able to do heavy sand and rough track terrain; and I have 3 boys not far off the teenage years (god help me) so I need space!

I've worked with a lot of landcruisers and I think they're brilliant, but I've no clue about prados - space/towing/tough enough/live long lives?

I'm a chick so go easy on the tech talk! I'm also a single mum and don't want to get worked over by the car sales boys. So if anyone out there has an opinion I'd love to know!

Thanks.