I’ve never heard of Mitchell, so impossible to tell if good or not. However it is really cheap. One of the retailers linked from that page says $250 aussie, around US$175 (the websites auto convert for me here in oz).
Ibanez is also known for electrics.
Knowing nothing about those guitars I would suggest you consider Yamaha which IMHO make the best price to performance guitars (i.e. bang for buck) and mass produce many, many instruments. At that price I’d also suggest you look for just an acoustic, or just an electric if you’d prefer, as you’re unlikely to get good pickups and a good guitar for that cheap.
BUT the most important thing is: go and try them, feel them, see what you prefer the look, feel and sound of.
Bill, best advice so far is to play before buying. Both the guitars you’ve shared seem good choices just based on specs. I did notice that they are different different designs: dreadnought and parlor. That is not a big deal, just an observation, and may influence your playing experience.
A quick Google, with the usual caveat that all you read on the internet is not necessarily true, tells me that Mitchell is a GC house-brand, made in (probably) China, with no red flags associated.
When in GC it may be worth trying other brands in the budget range. The ultimate is to end up with the guitar that you just know is the one that calls to you, that inspires you to play. If the Ibanez or Mitchell is that guitar then you have your answer. Maybe in trying others you may stumble over a different option.
Have fun and look forward to hearing your final choice.