Binaltech if you can find one cheap enough. Personally not a fan of HA.

Meister is a pret-ty sweet Binaltech. The pearl white just looks gorgeous on the Binaltech (unlike the dull flat white on Alternators Meister ... little wonder that thing shelf warmed even after TRU reduced it down to $25 each). It embodies all the great things about the Binaltech line - beautiful scale-replica alt mode, and I like how all four doors, the bonnet and boot can open to reveal the detailed interior. Transformation is fairly intuitive and the robot parts look fantastic, particularly how it has separate "eyes" sculpted beneath the blue visor. That's a nice touch. I've never thought about it before, but Meister is probably my favourite Binaltech. And Zoom-Zoom is pretty cool too. I also really like Overdrive.


Comparison between BT Meister/Zoom-Zoom w/ a real Mazda RX-8; the colours work wonderfully on the die-cast metal and look very realistic as scale replicas

I'm personally not a huge fan of Wheeljack; I don't hate it, but it's probably my least favourite of the BTs. I find the transformation to be counter-intuitive and I don't like how certain parts pop off too easily. Also, the robot design was clearly intended to be Grimlock (which came first), and despite some of the flaws of the mould, visually it works well as Grimlock. You can see how they've tried to "bulk up" the robot mode for Grimmie... but on Wheeljack he becomes all "buff" and he has a sword... he's more like Driftjack! (which only makes sense in hindsight - at the time none of us had ever even heard of Drift. ).

I used to have Alternators Wheeljack (I was gonna repaint it as Alt. Slicer, but ceebs so I ended up selling it ). Aside from being totally plastic, the colours are poor -- stripped of chrome and also the eyes aren't even blue, they're just black. And the silver paints were replaced with Hasbro Grey(TM). Very dull looking indeed.


Left: Alternators Wheeljack, Right: Binaltech Wheeljack

But as I said before, price is also a factor... I don't know how much BTs sell for now, but I've heard that the aftermarket prices can be expensive. While I really love BTs, I don't know if I'd recommend paying above RRP for them -- you may be more likely to find HA Jazz at (or closer to) RRP. Go for whichever one you can get at a better price (re: value for money). No point getting a BT Meister if it's gonna cost you a small fortune.