I wasn't able to get to the post office this past weekend as I had hoped, but that didn't stop Rachel from raiding out storage room for some of my Tunnels & Trolls collection. Thankfully, she stopped at the first box ;)
Personally, I love the Corgi edition of T&T 5e. Not because they renamed a bunch of silly named spells to be less silly (but left Yessa Massa intact - go figure), but because the size of the books makes it so convenient and I'm always surprised at how well paper that is a step above newsprint has survived so well for nearly 30 years. Well, that and how well focused the character generation rules are in the solos as compared to the complete 5e rules.
I'm serious. All you need to create a T&T character is provided in the Corgi Solos books (Rogues and Wizard-Warriors are omitted, but Rogues can be explained easily by the GM if needed and WWs should be omitted in any case.)
You can get the Corgi Solos direct from Flying Buffalo. I suggest you do so, as the pricing is better than anything I've see on Ebay. The Core Rules from Corgi are a bit harder to track down, but worth it.