I hope you are able to get a set that's ok for you as well. Best place to insert sets ideally is on places on the body that hasn't been used too much for injections. For convenience the tummy is always used but if loads of injections have been done, then its gonna be a bit hit and miss in finding somewhere where insulin will be absorbed ok.
Regarding the Flexlink, it was the Flexlink Plus that was withdrawn... The standard Flexlink is ok although it recently became available in 6mm as well as 8mm. I get on fine with the 8mm but not 6mm. I can insert the 8mm in upper tummy above naval and also upper centre part of backside but the set is not so good in my lower tummy or side lower part of my backside (I always injected my Levemir there).
The Rapid D depending on where you end up inserting it, might require help from someone to unswivel the 2 tube connectors when taking a shower etc. Do get some adhesive removal spray when taking them out as they stick really well and will need the white adhesive part to be pulled back slowly towards the centre where the needle is otherwise you will get blood everywhere and a bit of ''''ouch''''' as well. Some people use babyoil but I use a spray such as LiftPlus (there are loads of companies that produce adhesive removal spray mainly for stomas but the spray works on infusion sets as well.
Good luck