Assuming that tonearms have a “sonic signature” is not helpful. While cartridges sound different depending on its component construction, tonearms are vibration mitigation devices and are NOT designed to sound like anything. Usually one’s limiting budget and cartridge which determines tonearm options.
Comparison of sonic qualities of some tonearms
I’m relatively new to the world of vinyl, listening seriously for probably only 2 years. Of course, many big picture items (e.g. turntable, phono stage, cartridges) are discussed extensively on this forum, but I haven’t seen much discussion comparing different tonearms. I would be interested to hear about different people’s experiences with different tonearms, mentioning the audible advantages and disadvantages of each tonearm, realizing that there is no perfect sound, although from what I read about others’ experiences, SAT tonearms may come closest, albeit at a very high price.