[Dandare]

Well,

FTX Vantage, not so convinced how robust they are, plastics seem brittle, though others will say different. probably false economy if bought to race, limited parts availability (certainly if you race it as not many people around you will have parts for it). I'd say either buy it in it's cheapest form (brushed), accept it & enjoy it for what it is ie, cheap fun. To race 4wd, maybe something like a Kyosho Lazer Readyset ??

FTX Edge, as above, has all the ingredients to race, on paper, but questionable durability, parts availability, nobody else really races them etc (possible limited wheel choice too..)

B4.1 RTR, wiser choice tbh, parts not a problem, proven race design, everyone races them, certainly capable straight out of the box.

Losi/TLR 22, wise choice again for the same reasons as above, more expensive RTR than the B4.1 though mid & rear motor layout option.

The key is to know where you're going within the hobby before the spending starts to avoid buying everything twice (not easy, lol). Cheap fun with no view to progressing get a RTR brushless buggy & enjoy it, end of.
Otherwise either buy something upgradable but the cheapest variant (Ansmann Mad rat brushed RTR for £99 for example), enjoy it for a few months, then you have a good platform with lots of upgrades available to turn it into something competitive without having spent an extra £50+ on the budget brushless version which you'd junk anyway, this is better spent putting it towards better electrics when the time comes.

Or, buy a kit (no electrics), build it (handy as you'll be more capable of fixing it when it breaks) & buy quality electrics straight off.

Or, look at the secondhand market, plenty of quality buggys here..