I had an old oven that the element blew in, it was not hard to change myself (actual mechanical idiot)
Then later the fan blew, and I replaced that too.
(might actually be getting the order wrong, but i replaced both and am still not dead)
Having gone from a non-fan to a fan oven, there was an improvement from the new (fan) oven, but that was probably due it not being ancient more than the addition of a fan.
Can't imagine price being a massive difference, so get a fan one.
I had an old oven that the element blew in, it was not hard to change myself (actual mechanical idiot)
Then later the fan blew, and I replaced that too.
(might actually be getting the order wrong, but i replaced both and am still not dead)
Having gone from a non-fan to a fan oven, there was an improvement from the new (fan) oven, but that was probably due it not being ancient more than the addition of a fan.
Can't imagine price being a massive difference, so get a fan one.