I have made the switch to a Celestion Blue Bulldog. The sound is now more tight in the bass and very "transparent", especially in clean settings, great dynamics. For me it was worth the money!
You have to take into account that this speaker is rated at 15 W, so if you use only one speaker, make sure you don't go higher than the 15 W setting on the LSS. Even at 15 W, the amp is still loud enough for many situations. For larger clubs, I use the amp with an extension cabinet (Mesa 1 x 12, open back w. another Blue Bulldog).