Albiet over 30 years ago, I did my 100 hour commercial initial on a wood bladed 47, but they had a 206 doing some stuff and asked if I wanted some turbine time, so I flew that a few hours, then back on the 47, and then they had a 500C and I flew a few hours on that. At that stage they are all just helicopters and to me it didn't matter, I quite liked switching it up. That being said I LOVED the 500! Images of TC buzzing around Maui......
You will have no issues learning on a 500. If thats the helo that floats your boat, go for it! Don't overthink it, enjoy!