I have an old Enstrom F28 which has been a brilliant helicopter. Bought cheap and then spent a significant sum (half the purchase cost) to make it nice. In total it cost about the same as a cheap R22. It has been very reliable for 3 years. Insurance is cheap as based on hull value.
If you get an Enstrom, keep it dry, get a good engineer (mechanic). Don't economise on parts, Learn how to run it very, very lean and enjoy a good, safe, economical helicopter. Ideal for private flying. My situation was the same as yours and I have not regretted getting it one bit.
I wouldn't swap it for a Robinson 22. I wouldn't own a R22.
I have more time on Robinsons than Enstrom.
I would only consider swapping it for a 44 if the extra seat was required, and then I think I would get an Enstrom 480 despite the cost.