You should be able to find a good service with catchup and a large on-demand service.
The problem is when you go cheaper, companies put more people on the servers, which reduces performance - this is how they make it cheaper. Summary, chances are the cheaper you go, the more the service will suffer either in peak times or just generally and support may also follow. Do not expect a 100 euro service to perform like a 200 euros one.
The only other compromises s to reduce costs are sometimes removing catchup and also will be less overall content live and on-demand.
There are also other factors which people do not initially realise, like companies selling on old hardware, 3 year old model MAG boxes etc - not the latest equipment, so if starting afresh or lacking 4K or options like Netflix which remembers where you are on the films/series - all of this now is possible with a good service and latest equipment.
If looking for good advice, recommend contacting Television Technology
[email protected] local, long established & advertise on this forum.
Paul
http://www.televisiontechnology.eu