The first car I used properly was a Tamiya Manta Ray (borrowed from my neighbour who also had a Grasshopper). But the first car of my own was a Kyosho Lazer Alpha which I raced for a while, along with an old orange anodised tub chassis Team Associated RC10 my Dad won in an auction but the spares were hard/expensive to get hold of.
Then when I got a bit better I ended up going towards Schumacher and had a secondhand Bosscat for a bit, before upgrading to Cat 2000 4WD and also Cougar 2000 2WD.
When I came back to it again later I worked for CML Distribution (who distributed Team Associated, Yokomo, Reedy, Novak, and many more major brands) so I got everything at either a heavy staff discount (the same as the sponsored drivers) or completely free for testing/reviewing/etc... As such I ended up with a Team Associated TC3 and TC4, RC10B3, RC12L3, and also a lovely all carbon Yokomo BD10 (and randomly a Robitronic touring car as my local model became their distributer for a bit and wanted some local drivers to race it at big meetings for some exposure). What a life for an RC fanatic it was!
I'm taking a much more modest approach now as my racing will be around family time, so I've got myself a secondhand GRP Schumacher Atom 2 GT12 car (the current but most basic version), along with a load of secondhand electronics from members at the club to get going with cheaply. We'll see how it goes and if my son gets into it before I start spending any big bucks again.
Oh and the Acoms Techniplus Alpha... my first transmitter and one of my favourites!