Thanks for your reply.
One more question if you don't mind.
I noticed from older forum posts that MANY guys seemed to be having integration issues
between the POD HD and their DT amp. The main issue seemed to be the 4 voicings
on the DT amp sounded noticeably different from the analogous models on the POD HD.
Does anyone know if these issues have been addressed ?
I took some time with the DT50 a long time ago in a studio as I was on the DT50 beta team, and one of the lead sound engineers who worked on the amp models couldn't understand at the time the issues people were having around that.
I didn';t struggle to get just about identical sounds, but the key to getting that to work was the following:
1. Understanding which 4 POD HD amp models were used in the DT amps (this was communicated incorrectly on more than one occasion.
2. Remembering to include the default cam model in the POD when comparing it to the DT 50. It was assumed by most that the cab model wasn't in use in the DT, but in fact all the default DT models run with the corresponding default cab model turned on. Now with the latest DT25/50 firmware, you can have total control over that with MIDI or an iPhone/iPad.
3. the DT50 and DT25's default 4 voicings weren't the same in both amps.
4. remember that there's a chance the tone is affected a tiny amount by individual component tolerances, but of course that will only affect the tone a tiny amount. The HD300/400's master volume seemed to interact slightly differently than the POD HD500/Pro with the DT50. not a big change in tone, but some near max master vol settings on the HD300/400 seemed to make a tiny tonal change.
All that said, if you setup the gear in the right way they sound the same... the trick is knowing what settings are needed, but now you can see all the settings in the DT's using MIDI so there's no challenge to knowing that info like there was when the amps very only just released.
I second Zap's suggestion of a DT25 being enough for small/medium gigs.
hope that all helps.