Knowledge is king when it comes to home cinema kit that's for sure.
I'm afraid the nature of the internet is such that conflicting information is to be expected i'm afraid, you just have to filter out the rubbish and stick to trusted sites and opinions of those with knowledge of AV kit. That can be difficult at the best of times and you never stop learning but it can feel like you are drowning at times, touch wood i've not made any real mistakes for quite some years now so I can tell you for a fact that you can never do too much research and never just dive in without doing your research first, you have to remember that salesmen are just that no matter how friendly and knowledable they may seem and that a demo is essential before you buy.
Right back to the packages...I can vouch for Exceptional as I've bought from them before and had a smooth transaction with good service and quick delivery so you are in safe hands with them. The deal with the Zensor 5's and 1020 receiver would be my choice out of the two you linked to simply because of that Onkyo 818 amp that is bundled with the Ikons, if you could get a deal on the 1020 with the Ikons then it would be a tough choice...you have to remember that the Ikons need ALOT of room to breathe and need a big room to get the most from them. For most normal rooms I would say the Zensors would fill it easily but if you have the room then the Ikons make a convincing argument for themselves, it comes down to how big your room is??
Don't forget Exceptional do 6 monthly payments for most packages so you could still have a holiday and I'm sure if you spoke to them today or tomorrow you could have something ready to pick up when you are back this weekend so I would advise giving them a call to discuss a price for the Ikons and a 1020 receiver if you have the space along with stock levels of the Zensor 5 package too. If you want to dive in now then that is my advice but it is just my opinion don't forget, either way a call to discuss it won't cost much and may make your mind up.
As for this years receivers I very much doubt that there will be any revolution, it's going to be more a case of evolution. Yamaha have concentrated on audio performance on their Aventage receivers along with a powerful video processor chip (the IDT HQV Vida chip inside the 2020 and 3020 is the most powerful video processor chip available on the consumer market today) where as other manufacturers will add extra network fearures, bluetooth, built in wi-fi, on demand services such as Spotify etc.
I seriously doubt that if you bought a Yamaha receiver that you would feel short changed later in the year...there is one golden rule when buying AV kit...you buy the best kit you can at your price point at the time you buy and that has served me well. You have to accept that the next best product is always around the corner and if you wait you may never buy anything as AV kit is always evolving and getting better or adding features, just try to future proof youself now as much as possible. Even speakers get better over time so all you can do is buy the best you can when you decide to buy.
Hope that didn't go on too long but keep us updated with how you are thinking and if you have made a decision.
One other thing...what is the electrical supply in Belgium? If you are planning on using any of the kit there you may need to check the voltage for both products to make sure you can use it there but i'm sure you've already thought of that....thought it was worth mentioning just in case