Hello neccoboy and welcome to cloudy nights.
First there is a rule of thumb called the chromatic abberation ratio, here is a chart.
In general green is good, yellow is tolerable and red has problems.
To find it, change the aperture of the scope to inches, then divide the f ratio by that.
For example a 90mm f.5.6 is 5.6 / (90/25.4) = 1.58
The 80 7.5 = 7.5/(80/25.4) = 2.38.
Now that being said ...
There are lots of variables in this number.
In general CA becomes more of an issue when the power of the scope is rasied.
If you are using low power on dim objects it is not a problem.
Where it becomes bothersome is if you want to look at planets, or split double stars.
For planets, I would not go lower than 2 on the chart.
I also find that the moon can tolerate higher CA and not have details washed out.
One issue to be raised is that both of the scopes your are looking at are sourced directly from China.
I know just about all scopes come from China, but if there is an issue with yours, you are going to
be out of luck. I bought some electornics accidently through ebay directly from China and the thing did not
work. After rounds of useless help from the help desk I asked for a refund, and shipping the thing back
was more that the item was worth, so I just threw it away.
Do you have dark skies? If you don't, viewing many DSO's is going to be underwhelming.
Only a hand full of brighter ones will be available to you. And in order to get good views,
the more aperture the better. In general 100-120mm for a refractor is the sweet spot.
where price, performance, and portablility are optimized for visual.
For AP most people start out with a small ED refractor.