I use the labgear one (£6.75 number 4 on pg 682) and the ross one (number 5 £6.99) both plugged into a signal booster. However I think you'd get away with just the first one, it does depend on your location though, some places you won't recieve anything with one of them.
(BTW I have both of them cos I bought the second for FM reception only to find out my reciever and the aerial both had male ends, so I stuck it through the booster.)