The Spironet antennas work pretty well. You'll have to check the type of antennas to make sure they work. I have the 7 channel BP to use with the Fatshark channels and the antenna is RP-SMA. I thought it was supposed to be SMA, but I had some RP-SMA antennas so they worked fine. Just make sure you know if you get the SMA or the RP-SMA. Fatshark makes both versions or you could get an adaptor. I prefer to avoid the adaptor. Not sure if it's just an irrational thought of mine, but it seems the adaptors don't provide as smooth of a signal...or that has been my experience. Another thing about antennas, make sure you have them on pretty tight. That seems to provide a smoother signal... Again, just my eyeball experience.
Here's my 2 cents. I've used the Fatshark Spironets and they work pretty well. However, a better set-up (works well with interference and gets good penetration ie. Semi-dense trees) would be the VAS 3 turn Helical and a VAS Mad Mushroom on your monitor and a VAS Airscrew on your VTX. I use just a 3 turn Helical on my goggles (no diversity) and it has a wide enough beam as long as I'm pointing in the general direction.
Anyway, good luck and happy FPV'ing!