Help selecting GW Instek Analog Oscilloscope

Hi,

This is my first post on this forum. I am resurrecting my hobby for AUDIO Electronics after 12 years of inactivity in this filed.

I am going to purchase my first oscilloscope so I need help in selecting model of GW Instek Oscilloscope. My budget is tight and GW Instek two models only fall into budgetary limits.

Purpose: Audio Electronics (preamps, filters, power amps)
First Model: GOS-620 (20MHz)
Second Model: GOS-622G (20MHz)

Could you please suggest me the right model for the above purpose.

Thanks & Regards,

Sameer Dhiman