I've had a similar experience to yours, but in reverse, or maybe sideways, heheh.
I started with ProAc Tablette 50 Signatures with a sub, then later also got ProAc Response 1SCs, and eventually ended up with Response 2.5s without the sub.
I've heard many people say they enjoyed ProAc monitors with subs like the REL Stratta or Storm and felt they performed as well or better than the full-range ProAcs. There are those that would say a sat/sub combo could never sound as good as a full-range speaker.
I enjoyed the more balanced sound and more nuanced bass of the 2.5s without a sub, but then again I wasn't using a sub as good as a REL or ProAc ER-1.
I think you're right to fear the integration part. It could make or break the whole set up.
I started with ProAc Tablette 50 Signatures with a sub, then later also got ProAc Response 1SCs, and eventually ended up with Response 2.5s without the sub.
I've heard many people say they enjoyed ProAc monitors with subs like the REL Stratta or Storm and felt they performed as well or better than the full-range ProAcs. There are those that would say a sat/sub combo could never sound as good as a full-range speaker.
I enjoyed the more balanced sound and more nuanced bass of the 2.5s without a sub, but then again I wasn't using a sub as good as a REL or ProAc ER-1.
I think you're right to fear the integration part. It could make or break the whole set up.