I don't want to part from my Cosina CSR which I've had since I was a teenager or my other CSR which I inherited from my dad. My CSR served me well for decades - I've still go a lot of the slides and few of them hideously over or under exposed. At the moment, the CSR's haven't been used in ages and one needs new light seals.
But I've recently got the OM2 I always wanted which is about to get it's second roll of film tomorrow. And right now, that one is getting most attention.
I also have another SLR. One of those 'other' SLRs. Strange thing - you take a picture and it pops up on the back.... :-)
But If I were honest, I'd have to say, I don't want to part with any of them.