That Yokomo looks a beast, who's going to bother carrying all that to the track
First you better check your details Barry White, the current ProTrak discharges upto 20amps, thats the defualt at the moment.
I just got a ProTrak myself and think it's great.
Cheaper than a GFX, especially if you live in the UK
You can get attachments like a temperature tray which has four probes to measure temps across the pack, this can be used to peak your cells at a certain temperature rather than delta, although you still set a safety delta. There is also a motor run in stand which lets you run motors in with a pulsed rate aswell as linear.
It's the only charger I know of that has leads for individual cells which you can use if you want to check for dud cells whilst the pack is still built. you can also hook it up to your pc and get charge/discharge grapgs for the whole pack and each cell. The individual leads also mean the charger will peak if just one cell reaches the delta so no cell is overcharged.
It's the most regularly upgraded charger and there have been no massive upgrades that require a new charger to be bought instead, although some very early versions are more costly to upgrade. Not that you need every new version, there are just lots of little things tweaked that once in a while, say once a year, you may want to go up to a newer version.
Ok it looks "industrial" but now it comes with nice purple or blue anodized heatsinks aswell as black
and some more colourful front panels, you can even create your own front panel.
Yet another plus is that it's British made, no worries about build quality
Just my slightly biased opinion