Thats a great deal on the Record Pawer bs250 – 5 year warranty too , you are unlikely to regret spending the extra – if funds allow that is what I would get.
the Basa saws have a reputation of being better that the basic budget saws.
Tuffsaws for blades definitely . Try to avoid the cheapest new saws.
Avoid anything with 3 wheels – they can be pigs to setup – luckily s/h only mow.
I have an Inca bandsaw – only available s/h – swiss – superb.
Any new saw will need setting up/adjusting – youtube – watch some videos of setup/test – get everything square and the guides adjusted – then with a decent Tuffsaws blade you are sorted.
Go to the ukworkshop forum for research.