The Triathalon is a very versatile canopy that I highly recommend. They're very good for novices, and very forgiving. The only thing that made me stop jumping my Tri 99 was that I got a Diablo 88. I used to jump all the various ellipticals, but I got sick of worrying every opening about line twists and malfunctions and all the nasty stuff that can go wrong . I bought a Tri, and now a Diablo as well and never looked back.
Openings are pleasant now instead of worrisome.
And the Aerodyne ZP fabric is so much easier to pack than the slick stuff I would hate to go back. I am no expert, but thought my experience transitioning to the Triathlon 190 after only 5 square jumps might be useful to other novices. I weigh about 195. I got the bug again a few months ago and made several AFF jumps with rented gear at Skydive Santa Rosa CA, a well run and very friendly DZ about 50 miles North of San Francisco. Both the PD and Fury were F 111 canopies I believe.