First off, I'm speaking from a position of extreme ignorance! I run neither yet, although I'm toying with the idea of refurbishing a CTD 902 and going into business part time.
I would have thought that it's horses for courses.
How would a TM operator clean a fifth storey flat on a busy road? It somehow doesn't seem feasible.
And I'm sure that a porty operator would find it uneconomical to clean some very large buildings.
And there is probably a large amount of work out there where the only difference is in the results gained by the skill of the operator and the equipment used is really not important.
Isn't it really a case of segmenting the market? Decide which area of the market you want to serve and then serve it (i) to the best of your ability whilst (ii) maximising your profitability.
As Colin Day said, he knows a guy who runs a very simple porty set up and makes loads more money than he does.
A friend of mine who's a hypnotherapist always says: The best business doesn't go to the therapist who's best at therapy; it goes to the therapist who's best at marketing. I suspect that it might also be true for carpet cleaning.
It can be done, but I believe the guy in question should be running a more powerful machine to help him do the job quicker, seeing as he already has a good customer base and could easily fit more work in.
My tie at the moment is being a stay at home dad as such, so I only have a limited time to market and actually carry out the work. Once the kids are old enough to walk home on their own and sort themselves out, I'll be going full swing at my business...
Once the work is coming in at a good pace, I probably will invest in a spanking new TM so I can then clump 5 days of work into 2-3 days of work, which will give me freedom to do more marketing so I can build up to a solid 5 days work.
At least, that's the plan.....