Hi starwing. Well, the trusty N52 is a total workhorse, and you'll have many miles of smiles for sure! Over here in Singapore, the authorized dealer Performance Motors Limited (PML) have just phased out the 523 (the old 2.5L inline 6) and they didn't introduce the N52 into the F10 range.
In fact, my sales executive was in somewhat of a panic mode last Sunday, when we popped over to sign the papers for my F13 - they had just launched the F13 6 series coupe on Friday the 21st of October, and on Sunday, the 23rd of October, PML dropped the bomb on everyone and launched both the 520 & 528 with the new N20 4-banger AT ONCE.
So, you can imagine - eager F13 buyers (like myself) who were there at the 21st Oct launch descending on PML's flagship showroom to firm up their orders placed during the launch mixing with equally enthusiatic upgraders & potential buyers alike. I can tell you, it was like a war zone! Apparently, the rumor was that one of the test cars (a 528) had to be hauled back to the workshop after developing some problem - dunno whether it was due to over abuse or not!? Hahaha.
Given that rather inauspicious start, I'm very happy for you that you opted for the N52 powered version - and frankly, with the N52 housing a total of 258 beating stallions and churning out a top twist of 310Nm, you'll be hard pressed to find fault with the car! Congrats bro - it's a great buy!