Tell me which baby monitor to buy?

[NewBallsPlease00]

This is dc2, dc1 got cheap bog std one which did job but looking at angel mats etc totally confused!
Recommendations please, budget flex

I had an angel care for dd1&2 , gave it to someone to borrow and they gave it back broken with no offer to repair so dd3 I just used a plug in sound monitor (couldn't afford to replace and hardly slept) last week in asda they were on offer for £50 so snapped it up and feel much more assured for dd4.

It's all personal preference I know some will say they make no difference but to me it really did

Angel was £50 reg sound one £50?