I had a 6V-53 and still have a 2-53. Like them all, the 53, 71 and 92 Series.
The smallest one is a 1-71, biggest one I know of is a 20V-149.
Although I've seen some with just a 4-Speed, I agree, the more gears the better, but 8 to 10 Speeds with a 53 Series is plenty good enough.
