The B108 has great reviews, hardly hear of the Orange.
The B110 is great, but the BA115 is larger.
Actually The BA115HP has much more power and has wheels!
Just kidding here folks!
Here's a link to people who have modded the heck out of the BA108 with some pretty great success. I subscribed to this thread and every couple days people comment on it. Also most of the reviews on the website stores are pretty positive that they're great bang for the buck. Ampeg BA-108 Coffeeshop Micro Rig
Bear in mind this is a little guy but it does have the heart of an Ampeg! :-)