i remember when i first started carpet cleaning it seemed portables were always being improved with one big advancement to another. although my machine is running perfectly fine at the moment it's always a thought in my mind about getting a new up to date machine with the mod cons. just visited airflex website for some chemicals and noticed they are still advertising the storm as the greatest they do, but that's what, 5/6 years old now?
i'm sure all these companies are tweaking their models with small improvements, but have portables got now as good as they pretty much ever will? there's plus sides and downsides to each so room for improvement, but generally in 5 years say it seems we will have the exact same machines