The Henry Schein medical, dental, and veterinary supply company has a meter for either cats or dogs ( you set that). It's slightly less than the alphatrak, ~$47 for 50 strips vs. ~$52 for the AT.
I have both. Both can be set for cats on the meter. The AT can be set for dogs, cats, or small animals like hamsters, guinea pigs, ferrets, I think that's why vets use it. HS is either dog or cat only. Both use tiny amounts blood. AT has 2 blood ports, you can try twice per strip to get enough blood, HS only has one. AT memory counts down (most recent reading at the bottom of the memory scroll) HS counts up (most recent reading on top of memory). Both have cheap made in China cases, but the HS fits nicely into its case, ATs fits awkwardly (an annoying detail!)) HS reads about 50 pts lower than AT in completely unscientific comparison. Both are pet specific. FYI.