Tamiya cars and bikes go together very easily, well engineered and miles ahead of Revell, AMT etc.
The only downside is that Tamiya make the most boring subjects(well in my eyes anyway).
I don't want to build a F1 or BTCC car, I'd rather build a Chev van, Willys Gasser or 40 Ford coupe.
Tamiyas bikes are well engineered to and I've build a couple and as everyone else has said, minimum mould lines, super detail and great fit.