The original bike I wanted to Race was Italian, but due to a mechanical failure and a lack of parts I ended up on a factory TZ 250 Yamaha.
Below are some of the two stroke and Japanese bike that followed.

The Japanese bike is by far the most affordable as well as reliable.  I have had many and enjoyed each and every one for many reasons.  Below is a collection of some of the bikes I have owned in the past as well as the ninja 500R I still ride today.
 

My 2006 ZX6R

Here is my most recient ride. A sweet little Kawasaki ZX6r. Very Nice. Mods are Two Brothers carbon fiber exhaust, carbon fiber mirrors and side panels and a lowering link.

2005 Ninja 500 R

The Economy sport . good on gas, fast on the freeway and tight in the turns. I like it.

TZ 250 Yamaha GP Road Racer

My first Japanese bike. I Raced Grand Prix at Riverside,Willow Springs,Ontario Motor Speedway,and Sears Point.

1975 RD 125

Custom street cafe, I was building this one to race vintage.

RD 200 Yamaha

This one had a chrome Hodaka tank.and a TZ race tail

1975 RD 125 Cafe

This one was one of my favorites, but I got hit by a car and it got totaled.

1976 RD 125

Another Cafe racer by me. Fabricated seat tail had a compartment for gloves.

1976 RD Yamaha

Little Black Cafe racer wi front 1/2 faring

1975 RD 250 with 350 top end

Yamaha RD 250 ported polished trimmed and ballanced top end from a 350 RD. DG pipes, low bars,air coop and 1/4 faring. This one could jam!

1981 Yamaha sx 400

Drag bars with risers, velocity stacks,custom upholstry, bags and sissy bar. The paint job was all me. This one had a kick starter and was dubbed "the James Dean Bike"

CBR 1100

Fresh from Japan. One of the first full faring sport bike to come to the USA.

Virago 250 V Twin

Did the Harley Cafe look and gave this to a friend to learn to ride on. She still has it today.

1997 Ninja 250

This bike I keep in Napa ca. so I can ride when I am in the Bay Area

Kawasaki 440 LTD

Agian going for the CXafe Racer, low bars harley flat track seat.

Kawasaki CSR 1000

This was a big puppy. Same as the CHP's bikes used by California CHP. Had to be stratigic with city parking.

The Kawasaki Mach III

This was a two stroke three cylindar bike. One of the fastes in it day.

Yamaha SX 500

Dunstall body, 2 into one pipe, low bars and mags. Cool ride.

2003 Ninja 250

I broke this one in just right, then got hit by a motorist who ran a red light.

Kawasaki GPZ 550

Kerker header, gunfighter seat, a real fun bike.

2001 Ninja 250

Bought this on after I was hit by a car on my blue 2003 ninja 250. I was used and I didnt like the break in, traded it in on a 2005 Ninja 500R.

Las Vegas Motor Speedway 2005

me testriding a 2006 Ninja 250 at Las Vegas Track Day.

Me on my 97 Ninja 250

Got this new too. Its the one I keep in Napa now.