"What would be your fav for the ft-817ND but 100 Watts.."
I would roll my own. Seriously, the Tokyo HP sure is purdy,well made, and well reviewed. but ham radio is about building your own gear, when you can.
The EB-63 and AN-762 are 12v 5w in 140 output "baord and parts only" kit from Communications Concepts:http://www.communication-concepts.com/eb63.htmhttp://www.communication-concepts.com/an762.htm
The AN-762 is a better amp, though it has no COR circuitry like the EB-63. It has a better bias control circuit, and can be built to put out 180 watts with some component and PA final transistor changes. There are no "Elecraft Style" assembly instructions, but the Application Notes and a sheet of tips they include will help you get either of them buil. You WILL have to drill and tap your own heat sink, not a hard job, and of course provide your own enclosure, connectors, wire,fuses, etc.
For a Low Pass Filter Board, I would build this nice full kit with all parts, PC board, and instructions from the HF Packer Group:http://www.hfprojectsyahoo.com/kitlowpafimo.html
It covers 10m-160m. Text says it is rated at 100 watts (It is part of their 100 watt amp kit) but the designer, K5OOR, told me that it will handle 140 watts easily.
Like to include an SWR bridge and power meter? No problem! Check out the Elecraft W1 "mini-module" Computing Wattmeter and SWR bridge for $90.http://www.elecraft.com/mini_module_kits/mini_modules.htm#w1
It's autoranging,covers 150mw to 140w and displays SWR and Output power simultaneously.
Easy build, works great and you can install it right inside your amp project enclosure.
So for a lot less money than the Tokyo High Power you get a great homebrew amp at your desired outboard power level......and learn a lot of new things along the way. Not to mention bragging rights of ".....amp here is homebrew".