Both are very versatile amps but, most people will want an outboard reverb tank, unless the one in the amp is working perfectly and you're playing garage/psych, then it's perfect.
The OT's in these amps are very small, smaller than most 15 watt amps! The amount of iron in a transformer has a huge effect on price too: more iron=more money. Bigger OT's typically give an amp more clean headroom and a tighter bottom end, and drive the power tubes into compression/distortion. Smaller OT's typically have less clean headroom and saturate early, driving the amp into a very loose sounding "output transformer" distortion. And very pleasing to these ears

BTW, I have several amps for sale, what are ya all looking for?
Rocco