It really does depend on the seller and the buyer.
I've known people have an absolute nightmare with cash buyers - either gazundering at the last minute, pulling out (because they were investors and had no 'personal connection' to the property they were buying so had carried on looking in case a better opportunity came along), or suddenly announcing that they need a mortgage/to sell a different property to release funds
FTBs can be a pain in the bum because they don't understand the process and get spooked by fairly ordinary things coming up on a survey.
There also seems to be a 'we are doing you a favour buying your overpriced house with our hard earned money' feeling amongst some FTBs if you look at threads on here (as if they are the only ones who have ever had to save and don't want to overpay) so they sound like they would be a nightmare to deal with
People with something to sell come with the disadvantage of a chain and potential issues with mortgages etc
So it really does depend on why you are moving. If we were moving now it would be because we want to rather than need to, so I would rather take a little less and sell to someone who I thought would go through with buying my property without playing silly games with the price at the last minute, so FTBs would probably be bottom of my list