All the speedos in your list will move your car but won't take you very far if you want to race at some point.
Even if the reputation isn't great the pick of your list in my opinion would be the Losi combo.
While looking through your list and checking out some other stuff I came across this -->
http://www.modelsport.co.uk/index.ph...n&ItemID=34311
Seems to be within your budget and I've heard good things about the speedo and I liked the motor when I last ran one.
Another option would be to pick up a decent second-hand combo from one of the ones that always come up on oople. You ought to be able to pick up an LRP Sphere competition TC-Spec or 2007 spec or a Speed Passion GT or LPF for something like 50-70 quid and pair that with a used LRP or Speed Passion motor for 25-40 quid. Most guys on here won't sell you tat because they like coming here
Keep in mind that anything from HK is destined for the bin if it goes wrong as warranty is a nightmare to go through and you might get stung for customs and parcelforce charges on top of the buying price.