My first brand new car and my first convertible at the same time was in 1995 a MGF. TBH I was so proud but also TBH two years and about 20 repair sessions later it was obviously the wrong decision. A MX5 at that time would have been the far better choice but the MGF was more rare and exotic over here which I liked.
Talking reliability every older MGB would have been the better choice. Talking leakages the MGF cured me for the rest of my life to have any further expectations concerning a convertible. Therefore being on my fifth Mog I cannot complain at all. In my view all 5 Mogs were way better than this at her time brand new developed MGF.
I don‘t plan to drive my Mog on a rainy day. But if it rains underway I like this cozy feel like being 16 years old sleeping in a tend and listening to the drops of water. In fact my wife and I had the most atmospheric moments driving in the rain the 4/4 and the Mogs before.
For me my 4/4 with the easy up is very good sealed. Some drops or even more when driving through torrential rain are part of the good atmosphere.
Regarding the MGF the garage tried to fix the angle of the side windows for uncountless times with no success at all, she was always leaking and at that time I had no garage and the most of the water ingress happened when parking over night with the resuld of totally wet seats the other morning.
Other experiences with convertibles are only positive. My 2002 Honda S 2000 was dry like a tin top the three years I owned her. In 2007 I purchased a new Elise which I drive until now with plenty of joy. The built quality is astonishing superb and no drop of water at all comes in. And due to lack of even more garage space the Elise stays outside but well protected because she is sensibel but robust. This way I drive her at least once a week.