Yes i love MY ion, but all others i don't like. My reason for that is people are dumb, and people don't seem to know how to take care of these machines.
Hmmm. If you want one get one, get one; but as for now, or later i would just pick on what you think is best and what you want most. As they say "follow your heart".
THis brings me back to the day i bought my Ion, i was looking for a new marker and i was short on cash... so it was either a use pro stock with ton-O-ups or stock ion for 280... i went ion since it was cheaper and i saw something in it i didnt see in the pro-stock... a future.
like the pro master for instance. i like the pro master better than the ion and it cost about $50 more than the ion.